Sigma 8mm f/3.5 EX DG Circular Fisheye Lens for Canon SLR Cameras

Product Description

Manufacturer Description

This circular fisheye lens produces circular images with an angle of view of 180-degrees when attached to a full-frame digital or 35mm film SLR camera. It has a maximum aperture of f3.5, a minimum focusing distance of 5.5-inches and a maximum magnification of 4.6x. The special fisheye design allows maximum creative expression. Sigma's super multi-layer lens coating reduces flare and ghosting, a common problem with digital cameras. The new lens power layout reduces color aberrations. Providing excellent image quality for digital and film SLR cameras. This lens can be used for the scientific applications such as the solid angle measurements of cloud distribution over the sky, the vegetation distribution of the rain forest canopy, etc., due to the quantifiable angle/area relationship it produces. This lens has a gelatin filter holder at the rear, allowing the use of gelatin filters. DG (DG lens)
These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for digital SLR cameras whilst retaining suitability for traditional 35mm SLRs.
EX (EX lens)
The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance.

Product Description

This circular fisheye lens produces circular images with an angle of view of 180° when attached to a full-frame digital or 35mm film SLR camera. It has a maximum aperture of F3.5, a minimum focusing distance of 13.5cm (5.5") and a maximum magnification of 1:4.6. The special fisheye design allows maximum creative expression. Sigma's super multi-layer lens coating reduces flare and ghosting, a common problem with digital cameras. The new lens power layout reduces color aberrations. Providing excellent image quality for digital and film SLR cameras. This lens can be used for the scientific applications such as the solid angle measurements of cloud distribution over the sky, the vegetation distribution of the rain forest canopy, etc., due to the quantifiable angle/area relationship it produces. This lens has a gelatin filter holder at the rear, allowing the use of gelatin filters

Canon EF 15mm f/2.8 Fisheye Lens for Canon SLR Cameras

Product Description

Amazon.com Product Description

Love the fisheye effect? Turn to the Canon EF 15mm fisheye lens, which offers an ultra-wide 180-degree angle of view for capturing scenes well beyond your natural field of vision. As with all fisheye lenses, the 15mm provides a ton of unique and interesting effects, with a minimum focusing distance of 8 inches giving new meaning to close-up shots. Best of all, the lens is tack-sharp throughout its entire focus range. The lens--which includes a fixed petal-type hood and a built-in rear filter holder that holds up to three gel filters at once--carries a one-year warranty.

• Focal length: 15mm fisheye
• Maximum aperture: f/2.8
• Lens construction: 8 elements in 7 groups
• Diagonal angle of view: 180 degrees
• Focus adjustment: Overall linear extension system with AFD
• Closest focusing distance: 0.7 feet
• Filter size: Rear gel holder (accepts up to 3 precut gel filters)
• Dimensions: 2.9 inches in diameter, 2.4 inches long
• Weight: 11.6 ounces

Product Description

Fisheye lens with a 180 degree angle of view for unique and intriguing effects. The wide depth of field makes it even more interesting. The short minimum focusing distance of 8 in. (20 cm) gives new meaning to close-up shots. The lens has a fixed petal-type hood and a gelatin filter holder at the rear.

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Product Description

Amazon.com Product Description

Love the fisheye effect? Turn to the Canon EF 15mm fisheye lens, which offers an ultra-wide 180-degree angle of view for capturing scenes well beyond your natural field of vision. As with all fisheye lenses, the 15mm provides a ton of unique and interesting effects, with a minimum focusing distance of 8 inches giving new meaning to close-up shots. Best of all, the lens is tack-sharp throughout its entire focus range. The lens--which includes a fixed petal-type hood and a built-in rear filter holder that holds up to three gel filters at once--carries a one-year warranty.

• Focal length: 15mm fisheye
• Maximum aperture: f/2.8
• Lens construction: 8 elements in 7 groups
• Diagonal angle of view: 180 degrees
• Focus adjustment: Overall linear extension system with AFD
• Closest focusing distance: 0.7 feet
• Filter size: Rear gel holder (accepts up to 3 precut gel filters)
• Dimensions: 2.9 inches in diameter, 2.4 inches long
• Weight: 11.6 ounces

Product Description

Fisheye lens with a 180 degree angle of view for unique and intriguing effects. The wide depth of field makes it even more interesting. The short minimum focusing distance of 8 in. (20 cm) gives new meaning to close-up shots. The lens has a fixed petal-type hood and a gelatin filter holder at the rear.

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Vivitar - Fisheye lens - 7 mm - f/3.5 - Canon EF

Product Description

The Vivitar 7mm SERIES 1 Fisheye Lens is an excellent addition to any photographer's collection, giving users the ability to expand their creativity and capture incredible scenes from a truly unique perspective.
This lens, when used with cameras with an APS-C image sensor, creates images with an expanded perspective, including images with a creatively deformed outlook and a sharp pan focus that extends throughout the entire frame. By offering a 180-degree angle of view, this fisheye lens can be used to create amazing image expressions that cannot be seen by the human eye, such as exaggerated perspective and distortion. The minimum shooting distance (just 12 inches) and large depth of field also provide amazing close-up shots.
In addition, this lens incorporates the latest optical multi-coating techniques. The process of multi-coating assures virtually flare-free photographs even under adverse lighting conditions, resulting in crisp, high-contrast pictures.

Panasonic 8mm f/3.5 ED Fisheye Lens for Lumix G Micro Four Thirds Digital Cameras

Product Description

From the Manufacturer

The Panasonic Lumix G Fisheye 8mm/F3.5 lens (H-F008) is a 35mm camera equivalent 16mm lens, and the world’s smallest and lightest* digital interchangeable fisheye lens compatible with the Lumix G Series, DSL Micro (DSLM) cameras.

Featuring a 180-degree diagonal angle view, the Lumix G Fisheye 8mm/F3.5 lens offers a distinctive perspective and unique deformation effect, creating a creative view for both photos and video. Additionally, its compact size can be attributed to its ten lenses in nine groups, which takes advantage of the Micro Four Thirds system standard to achieve dramatic downsizing.

The adoption of an ED (Extra-low dispersion glass) lens achieves a stable, descriptive performance at all distances, to minimize chromatic aberration and distortion. The Lumix G Fisheye 8mm lens has the ability to capture extreme close-ups from far away, due in part to its advanced inner focus system.

The H-F008, Fisheye 8mm lens allows for use of the high-speed and accurate contrast AF system when mounted on the Panasonic Lumix G Series DSLM cameras, for more comfortable and enjoyable shooting. Seven blades give the aperture a rounded shape that produces an attractively smooth effect in out-of-focus areas when shooting at larger aperture settings. The inclusion of a stepping motor allows for smooth and silent focusing in both photo and movie recording modes.
_{*For a digital interchangeable fisheye lens as of June 1, 2010.}

Panasonic Lumix G Fisheye 8mm/F3.5 lens: Lens Diagram




Technical Specifications

• Lens Construction: 10 elements in 9 groups (1 ED lens)
• Mount: Micro Four Thirds mount
• Optical Image Stabilizer: No
• Focal Length: f=8mm (35mm camera equivalent 16mm)
• Aperture Type: 7 diaphragm blades / Circular aperture diaphragm
• Aperture: F3.5
• Minimum Aperture: F22
• Closest Focusing Distance: 0.1m / 0.33ft
• Maximum Magnification: Approx. 0.20x / 0.40x (35mm camera equivalent)
• Diagonal Angle of View: 180°
• Projection System: Equisolid angle projection system
• Filter Size Front: Mounting not possible / Rear : Sheet filter holder 22mm / 0.86in x 22mm / 0.86in
• Max. Diameter: f60.7mm / 2.39in
• Overall Length: Approx. 51.7mm / 2.04in (from the tip of the lens to the base side of the lens mount)
• Weight: Approx. 165g / 5.82oz

Panasonic Lumix G Fisheye 8mm/F3.5 lens: MTF Chart

Product Description

Panasonic H-F008 8 mm f/3.5 Fisheye Lens for Micro Four Thirds H-F008 Lenses & Filters

PENTAX DA 10-17mm f/3.5-4.5 ED (IF) Fish-Eye Lens for Pentax Digital SLR

Product Description

Amazon.com Product Description

Capture fisheye imagery with a 180-degree angle of view with the Pentax DA 10-17mm fisheye lens. Designed for the Pentax *ist series of digital SLR cameras, the lens creates images with an expanded perspective, including images with a creatively deformed outlook and a sharp pan focus that extends throughout the entire frame. The image circle in DA series lenses, meanwhile, is designed to perfectly match the 23.5 x 15.7mm size of the CCD used in Pentax digital SLRs to optimize camera performance. Plus, the new design contributes to a drastic reduction in size, weight, and production cost compared to 35mm counterparts with similar specifications. Additional features include a 35mm equivalent focal length of 15-26mm; new water- and oil-repellant super-protective (SP) lens coatings for easy cleaning; extra-low-dispersion (ED) glass for superior sharpness and color correction; and a responsive Quick Shift Focus System for switching instantly from autofocus (AF) to manual focus (MF).

• Lens construction: 10 elements in 8 groups
• Angle of view: 180 to 100 degrees
• Diaphragm: Fully automatic
• Blades: 6
• Minimum aperture: f/22-32
• Metering: TTL open-aperture meeting
• Minimum focusing distance: 0.46 feet
• Maximum magnification: 0.23x to 0.39x
• Dimensions: 2.8 inches in diameter
• Weight: 11.3 ounces

Product Description

Capture fisheye imagery with a 180-degree angle of view with the Pentax DA 10-17mm fisheye lens. Designed for the Pentax *ist series of digital SLR cameras, the lens creates images with an expanded perspective, including images with a creatively deformed outlook and a sharp pan focus that extends throughout the entire frame. The image circle in DA series lenses, meanwhile, is designed to perfectly match the 23.5 x 15.7mm size of the CCD used in Pentax digital SLRs to optimize camera performance. Plus, the new design contributes to a drastic reduction in size, weight, and production cost compared to 35mm counterparts with similar specifications. Additional features include a 35mm equivalent focal length of 15-26mm; new water- and oil-repellant super-protective (SP) lens coatings for easy cleaning; extra-low-dispersion (ED) glass for superior sharpness and color correction; and a responsive Quick Shift Focus System for switching instantly from autofocus (AF) to manual focus (MF).

Nikon 10.5mm f/2.8G ED AF DX Fisheye Nikkor Lens

Product Description

From the Manufacturer

This ultra-wide-angle, frame-filling fisheye, designed exclusively for use with Nikon’s DX-format, delivers incredible images with a 180-degree angle of view.

• The first fisheye lens developed exclusively for use with Nikon DX format

• Equivalent to 16mm focal length on a 35mm

• Close-Range Correction (CRC) provides high performance for sharper images when taking pictures up close

• Design enables a combination of wider angle of view with optical characteristics that are optimized for Nikon digital SLR camera sensors

• Rounded diaphragm makes out-of-focus elements appear more natural

• Built-in flower-type lens hood

• Ultra-wide picture angle of 180 degrees on DX sensor is achieved by producing a smaller image circle (the size of the image that is projected by the lens onto the sensor) enabling a smaller lens diameter, lighter weight and optimal image quality from center-to-edge-to-corner on the image

• Minimum focus distance of 0.14m (5.5 in.) or 0.03m (1.2 in.) from the lens front, makes extreme close-ups possible

• Extra-low Dispersion (ED) glass element minimizes chromatic aberration

• Nikon D-type design provides precise distance information for flash and ambient light exposure processes

• G-type DX NIKKOR is designed exclusively for use with Nikon digital SLR models

Product Description

Nikon 10.5mm f/2.8G ED AF DX Fisheye Nikkor Lens (2148)

Sony VCLECF1 Fisheye Conversion Lens (Black)

Product Description

Get a fascinating perspective on landscapes, cities, crowds and special events. For use with SEL 16F28 lens.

Canon Powershot G11 0.21x-0.22x High Grade Fish-Eye Lens

Canon Powershot G11 0.21x-0.22x High Grade Fish-Eye Lens (Includes Necessary Lens Adapter & Ring) + Nwv Direct Micro Fiber Cleaning Cloth

Product Description

This Item Includes: Lens, Lens Cap, Lens Bottom Cover, Lens Adapter, Nwv Direct Micro Fiber Cleaning Cloth

Rokinon FE8M-C 8mm F3.5 Fisheye Lens for Canon (Black)

Product Description

From the Manufacturer

The NEW ROKINON 8mm Ultra Wide Angle Fisheye Lens is the most affordable 8mm Fisheye Lens in the market. It features the widest field of view over any other 8mm fisheye lens, and its build quality and optical construction are superb. The ROKINON 8mm lens is designed for digital SLR cameras with APS-C image sensors. For these types of cameras, it provides full-frame coverage - which means that pictures will cover the entire frame. It is also compatible with cameras that have a full-frame sensor. For cameras with full-frame sensors, the lens will produce pictures with a semi-circular image and close images will appear proportionately large for a dramatic effect. The ROKINON 8mm lens creates images with an expanded and exaggerated perspective and an extremely wide 180° angle of view. The lens is available for the following mounts: Canon EOS, Nikon, Sony Alpha, Pentax & Olympus 4/3.

Specifications:

Specifications		f=8mm, F 3.5 (Fisheye Lens)
Aperture Range:		F3.5 ~ 22
Optical Construction:		10 Element in 7 Groups (1 Aspherical Lens)
Min. Focusing Distance:		1.0 ft (0.3m)
Filter Size		NONE
Maximum Diameter:		φ75.0mm
Mount:		Nikon	Pentax	Sony	Canon	4/3	Samsung NX
Angle of View:	APS-C	180°	180°	180°	167°	-	180°
	4/3	-	-	-	-	139.3°	-
Length:		74.8mm	75.8mm	76.8mm	77.3mm	80mm	98.3mm
Weight:		14.7 oz	14.6 oz	15.6 oz	15.1 oz	15.1 oz	16.4 oz

Features:

• Ultra-wide 180 degree diagonal field-of-view for APS-C size image formats
• Lens is constructed with hybrid aspherical lenses for outstanding, sharply defined images
• Lens features super multi-layer coating to reduce flares and ghost images
• Lens has a minimum focusing distance of 12 inches for enhanced close-up shots
• Lens includes a built-in petal type hood

Sample Photos:
See attached sample photos taken with this lens:

Product Description

Rokinon 8mm F/3.5 Fisheye Lens for Canon; Lens creates images with an expanded perspective and allows user to capture a very unique perspective; Lens Conforms to APS-C (1:1.5x) size digital imaging format; Lens Actualizes 8mm focal length and a diagonal angle of view of 180 degrees for APS-C size; Lens Corrects aberrations using a complex aspherical lens; Manual Focus; Aperture range of F/3.5 ~ 22; Built-in Petal type hood and multi-coating help control flaring and ghosting; Minimum focusing distance of 12 inches (0.3m); Includes Lens Pouch, Instruction Manual, and One Year Rokinon Warranty

What is a fish-eye lens?

Photography fisheye fisheye lens lets you capture wide-angle images with a very large field of vision. To do this, use a hemispherical shape, such as fish eyes, to capture a wide range of radius. In the images taken with fish-eye camera lens, looks normal, but outside the central elements of image distortion.
The difference between the fisheye lens and wide angle lensImportant to understand the difference between the fisheye and ultra wide-angle lens or ordinary.
The main difference is corrected wide-angle lens distortion correction elements, rather than a fish-eye camera lens. Pictures taken with a fisheye lens has an extreme point of 180 degree views and photographs marked "barrel distortion." Angle wide-angle lens, fisheye lens focal length less than the same.
Fish-eye lens typeMake sure you choose the right type of fish-eye lens for your needs. There are two types of fisheye lens: the diagonal and circular.
A diagonal fisheye lens is often preferred, because they map a 180-degree view of the "diagonal" in your frame sensor, the image area is full of pixels. This is why the diagonal are often called "full-frame fish-eye lens."
A circular fisheye lens focal length is shorter than the diagonal to do, and create a circle in the center of the image on the screen of the camera. For the full-frame camera, you need a focal length range is 8 - 10 mm. If you are using a digital camera with APS - C sized sensor, the fish-eye lens, focal length range of 4 or 5 mm is required.
Tips and techniques, use of fish-eye lens1. Buy the right lens, the correct sensor size. Most digital camera owners with APS - C sized sensor and crop factor of 1.5 times, 1.6 times as long. For example, if you buy a Canon 15 mm Canon 7D full frame diagonal to you, because you have to make some cool fish-eye image, you will be very disappointed, Canon fisheye. You end up with even a wide-angle lens, the effective focal length of 24mm. (15 mm x 24 mm = 1.6). In order to achieve the "fish-eye effect", you will need a lens with a focal length of 8 or 10mm.
General rule of thumb is that if you shoot full frame camera, such as the Canon 5D Mark II or Nikon D700, you need a lens focal length 15 or 16mm. If you are using a camera with APS - C sized sensor, you need 8 after the property range from 11 mm.
2. Choose a scene that will enhance the ultimate fish-eye lens effect the image, such as construction drawings. You can get a real WOW, when produced to capture the interest of large buildings or areas. The use of isolation one in the crowd - it can look spectacular when shooting from above.
3. Is super creative. Large field of view means you can get a perspective that is very unusual for small spaces or inaccessible. Or use the fisheye lens to create a humorous effect, such as extreme close-up farm animals.
4. Think about the composition of your shot. Carefully consider the prospects you want to stand out and can be used to frame the background. One example is the focus of lavender flowers in the foreground of hills or mountains frame the background.
5. Note that each line of the scene, and to ensure straight lines concentrated in the frame. Remember, fish-eye lens distorts any center, so the only straight line are those in the middle of the picture. Away from the center of the tourist routes, the greater the distortion will be.
6. Reduced, improving circulation distorted image. In full extension, creating a circular fisheye images, graphics elements and pressing elements around the outer loop.
7. Reduce the focal length to use wide-angle fisheye lens. Shorter focal length, will reduce the distortion of the final image. When you zoom all the way, you can double-click fisheye wide-angle lens, barrel distortion, but be prepared to accept some of the edge of the image.
Fish-eye lens, is not only versatile, you can have a lot of fun with it. So I went out to play!

Fish eye lens view

Wide-angle lens is the subject of landscape photography. Zoom wide angle seems to be the modern standard in everyone's camera bag. Typically, when rendering a large landscape itself, the wide-angle lens is the first time, sometimes only to be used. See "out of the district, including all images" is one of the photos are more popular way. Those who like this style should be regarded as very wide outside, and trying to fish-eye lens.Strict sense of the concept of landscape photography and see the fish-eye lens ridiculous. After all, the extreme distortion and perspective, in fact, you can see more of a gimmick than a serious tool.While this may happen, the fish-eye lens is a tool, I found myself often looking to take contact. I usually wider than normal zoom, but I try to use a fish-eye lens. This may not always succeed, but it happens, the fish eye you can create a "wow" factor to make the image pop.What is clear is that the fish-eye lens, this view is very extensive. In fact, the "very broad" view is too cautious, freakishly large fish-eye lens, so the width of the image may be on their own feet on a regular basis! In view of ordinary people who want to see now how to reach far beyond the range of the growing popularity of 10 - 20mm lens in the sensor model of the emergence of 14 - 24 mm or 17--40 mm full frame. Fish-eye lens, the face of 180 degrees, what this means, you can see in front of you will be included in the picture.I bought a fisheye lens to my travel plans to mountain bromo (East Java). The fish-eye lens is a very different picture, in a narrow canyon. I was not disappointed. As the fish-eye lens, I can see the gaps, in different ways, including more important than ever to the picture. Waves and curves of the narrow canyon, slot is hidden, and even fish-eye distortion. These pictures are the extra things I see is different from other people first. Now the buttonhole of a score!I again used a fisheye lens to capture the entire curve produced another unique image.I started using. A sky full of clouds outstanding, star road, or in bamboo - I have been looking for useful holes. Now the lens is always with me.You have to be careful of your chosen theme and fish-eye lens. Under normal circumstances, this seems a bit close to the wide-angle lens, fish-eye lens is unusual; object 15 meters away, it seems to go up the hill, the distance may be very small picture.Fish-eye in a small space into their own, or when things are very close to the lens. If you want to display something in the vicinity, this is a lens that will be used to do. Fish-eye lens is good, in the woods, valleys, or learning the night sky.Depth of field is also a large fish-eye lens. At f / 8 or f/11 are basically nothing more than a few feet in front of you will be the focus. I usually set the focus to 8 feet, then f/11 camera lens, no focus, just write and shoot.Some of thinking how to use a fisheye lens the image can be distorted, especially at the edge. Tilt the lens up or folded down can actually make things. While this may work in some of the pictures are not. Therefore, even though I really like this lens is not the right tool for every image.I often try to frame the main body of the landscape, to reduce or eliminate distortion. Subjects closer to the center of the picture and away from the edge can help. Sometimes it works, but at other times refers to crop the image. However, I can see more with my fish eye lens, the image cut, because although I have seen usually far more than any other lens can do.You can create distortions in your work. With the right image, highlighting the work of the fisheye distortion, or at least excusable, because the picture. This can be a great way to bring some new life in place, often photographed.I also found a great way to show the location of the camp, I like to do photos, or make fun of the portrait. Distortion become part of what makes an image of the wing and out, in good working condition.If you find any distortion bothers you too much, trying to fix it in Photoshop software to solve many problems. You can work here as well.So, if you are a photographer who likes watching birds, have the opportunity to consider the possibility of holes, and explore how to build a wide-angle zoom lens the image of the outside area is normal. You may be surprised to find that it can generate enormous fun pictures.

Fisheye lens

In photography, fish-eye lens is a wide-angle lens, in an image, a broad panoramic and hemispherical. Originally developed using weather [1] study cloud formation and so-called "all-sky lens," fish-eye lens quickly became popular in the general photography with its unique appearance, distorted. The photographers often use their vast landscapes to show the curve of the earth. Hemispherical photography is used for many scientific purposes the study plant canopy geometry, and calculate the near-ground solar radiation.
Fish-eye lens focal length depends on film format. For the popular 35 mm film format, typical focal length of the fish-eye lens is 8 mm and 10 mm image circle, 15-16 mm full-frame image. For digital cameras use a smaller electronic imaging, such as 1 / 4 "and 1 / 3" format CCD or CMOS sensor, the focal length of the "micro" fish-eye lens, can be as short as 1-2 mm.
All ultra-wide-angle lens with a certain amount of barrel distortion. While this can be easily corrected quite a wide viewing angle, ultra wide-angle lens with a straight angle greater than 90 degrees, it is difficult to design. Fisheye lenses achieve extremely wide viewing angle and a straight line image abstinence, choosing instead to a special mapping (for example: angle equisolid), which appeared in the typical convex to the image. Panoramic rotating lens or stitching images (cylindrical perspective) is not a fisheye photo.Directory[Hide]

    A type of fish-eye lens
        1.1 cycle
        1.2 Full screen
        1.3 small fish-eye lens
    2 Focus
    3 Other Uses
    4 fish-eye lens to a 35mm camera
        4.1 Circular Fisheye
        4.2 full-screen fish-eye lens
    5 mapping
    6 See also
    7 References
    8 External links
[Edit] Types of fish-eye lens
In a circular fisheye image circle is written in the film or sensor area, the full-frame fisheye image circle is limited to film or sensor area.
In addition, different fisheye images distortions different, and how their distortion of the mapping function is called. A common type for consumer use perspective equisolid.[Edit] NoticeImages taken using a circular fish-eye lensImages taken with a circular fisheye.
The first type of fish-eye lens, to the development of "circular fish-eye" - a camera, took place in 180 ° hemisphere and projected this as a circle in the movie screen. Some fish-eye circles in orthographic projection model scientific applications. It has a 180 ° vertical viewing angle, horizontal and diagonal viewing angle is 180 °. Most circular fisheye lens covers a smaller image circle than the straight shot, so the angle of the frame will be completely dark.[Edit] full screen
Such as fisheye lenses gained popularity in general photography, camera companies began manufacturing the lens, fisheye image circle expanded to cover the entire 35mm film frame, which is a fish-eye type most frequently used photographers.
Angle of the image produced by these lenses only measures 180 degrees when measured from end to end: it has a 180 ° diagonal angle, and horizontal and vertical angle will be smaller, because a wide-angle equisolid mm fish optical head 15, the horizontal field of view is 147 °, the vertical FOV is 94 °. [2]
Full-frame fish-eye lens of the first mass-produced by the Nikon 16 mm lens in the early 1970s. Digital cameras and APS - C size sensor needs 10.5 mm lens to get the same effect as a 16mm lens on full frame sensor camera [3].
Because this type of digital technology, widely used, full-frame fish-eye effect can be the camera. The selected images can be digitally changed to become a full-frame fisheye images without the need for special lenses.

    Bondi Beach, Sydney: a fish-eye lens of the camera-like results with Nikon D3100

    15 mm fish-eye lens (type: equisolid angle), 35 mm film, to reduce the sliding frame

    Nikkor 10.5 mm. A good example of a full-frame fish-eye lens used in a closed space

    Fisheye Nikkor 10.5 mm (Type: equisolid angle), APS - C sized sensor, cropped to the rectangular

    A full-frame lens, fish-eye lens 35mm camera.

    A Peilun 8 mm f/3.5 lens.
[Edit] miniature fish-eye lens
Small fish-eye lens is designed for small-format CCD / CMOS imagers typically used in consumer cameras and security. [4] is a popular format, size 1 / 4 "(active area 3.6mmx2.7mm), 1 / 3" (active area 4.8mmx30.6 mm) and 1 / 2 "(6.6mmx4.8mm active area) according to active imaging area. the same lens, can form a circular image imager (such as 1 / 2 "), and the full-frame on the other (such as 1 / 4").[Edit] Focus
Sigma currently makes the 4.5 mm fish-eye lens to capture 180-degree view of the physical plant [5]. Sunex5.6 mm fisheye lens makes shooting 185-degree field of view 1.5 times 1.6 times round the Nikon and Canon SLR cameras.
Nikon produce 6 mm circular fisheye lens is originally designed for the Antarctic expedition. It features 220-degree field of vision to capture the entire sky and surrounding ground when pointed straight up. These lenses are no longer in production, Nikon, [6], is the use of interactive virtual reality images such as QuickTime VR and IPIX. As a wide field of view, very large, complex - Weight 5.2 kg (11 pounds), with a diameter of 236 mm (9.3 inches). It dwarfs a regular basis 35 mm SLR camera [7], has its own tripod mounting point, a feature usually present in large numbers, or telephoto lens focal length to reduce the tension, because the weight of the lens mount lenses than cameras.One pair for the 8mm fisheye lens, f/2.8 AIS Nikkor lens mounted on the Nikon F5 body.7.5 mm f/5.6 Fisheye-Nikkor installed in the body of the same year Nikon F.

8 mm fisheye lens, Nikon has made, it has been proven to be used for research purposes, because the equidistant projection (isometric), in which the distance along the radius of the image circle is proportional to the zenith.[Edit] Other usesPicture taken 16 mm full-frame lens fisheye, 35mm format digital SLR, the angle of the square before and after re-mapping tool with panoramic

    With the right software, the image produced by the arc of fish-eye lens can be mapped to a traditional linear projection. Although this requires some loss of edge detail of the framework, this technique can produce images with a large field of view than the traditional linear lens. This is especially useful for creating panoramic images.
    Some planetariums use a fisheye lens to project images in the form of two-dimensional film of the night sky into the interior of the dome. The Navitar's HemiStar6.75 mm fisheye for dome projection.
    Flight simulator and combat simulator using visual effects, such as fish-eye lens Navitar's HemiStar, to create an immersive environment for pilots, air traffic control, or military training in.
    Similarly, IMAX ball (formerly "Sky") movement, through the photographic image formats include a circular fish-eye lens, and through the same projection into a hemispherical screen.
    Scientists and resource managers (for example, biologists, forestry, meteorology) using fisheye lens of hemispherical photography to calculate the index of plant canopy and near-ground solar radiation. Applications include assessment of forest health in winter king butterfly habitat characterization and management of vineyards.
    Photographers and videographers use fisheye lens, so that they can get a camera action shots as close as possible, but also to capture aspects such as the skateboard set, players still retain the image.
    Door peephole for a fisheye lens generally includes, providing a broad perspective. Security cameras often tend to have these lenses for the same reason.
    In computer graphics, the circular fisheye images can be used to create environment maps the physical world. A complete 180-degree wide angle fish-eye images will apply to half-space mapping algorithm, if there is an appropriate application cubic meters. Environment map can be used to create 3D objects and virtual panoramic scenes.
[Edit] fish-eye lens to 35 mm camera[Edit] Circular Fisheye

    Peleng 8 mm f/3.5 lens
    Canon FD f/5.6 7.5 mm (note: not the EF mount) (not supplied)
    Minolta ROKKOR -7.5 mm F4.0 Fisheye
    Nikkor 8 mm F / 8 lens (not supplied)
    7.5 mm f/5.6 Nikkor lens (not supplied)
A picture is taken from the entrance of the Louvre Museum 7.5 mm f/5.6 Fisheye-Nikkor lens

    8 mm f/2.8 Nikkor lens (not supplied)
    Nikkor 6 mm f/2.8 lens (not supplied)
    Sigma EX DG8 mm f/3.5 lens (Sigma 8 mm instead of F / 4 EX DG)
    Sigma 4.5 mm f/2.8 EX DC HSM lens circular fisheye APS - C sensor
    Sunex [8] 185 degrees SuperFisheye [9] 5.6 毫米 f/5.6 SLR
    Vemar12 mm f/5.6 fish eye / ultra-wide angle round the image full frame camera 135 if the points cover in place, 160 degree panorama. Usually as the installation of cameras in the range of T2, but no longer in production.
    8-( 15 mm f/4L Canon EF lenses can be used either as a circular fisheye and full-frame fish-eye lens camera, 35mm full-frame)
[Edit] full-screen fish-eye lens

    AF DX Fisheye 10.5mm f/2.8G-Nikkor ED (full frame on a DX sensor, nearly circular, the FX sensor is essential, if the hood is removed [10] - image circle slightly larger than the frame and There are some planting) at the top and bottom. [11]
    MC Zenitar16 mm f/2.8 lens (model to choose from: MC Zenitar - K - Pentax Mount; MC Zenitar - M - M42 screwmount; MC Zenitar - H - Nikon mouth) [12]
    Sigma EX DG15 mm f/2.8 diagonal fisheye lens [13]
    Sigma 10 mm f/2.8 EX DC HSM lens fish-eye lens APS - C sensor.
    Tokina 10-17 mm zoom lens f/3.5-4.5 fisheye APS - C sensor
    Canon EF15 mm f/2.8 lens
    Canon EF15 mm 8 - F / 4 USM zoom fisheye
    Minolta / Sony AF16 mm f/2.8 fisheye lens
    Olympus ZUIKO DIGITAL ED8 mm f/3.5 fisheye lens] of the Four Thirds camera [14]
    Pentax DA 10 -17 mm f/3.5-4.5 Lens ED (IF) - full-frame image of APS - C sensor K-mount cameras
    Sanyo optical 8 mm f/3.5 fisheye lens with CS APS - C sensor - Powell is also sold as, polar, Falcon, the same as the Vectra Rokinon 7mm and 6.5 mm lens Opteka. This manual focus lens, and report using three-dimensional projection [15] [16]
    8-( 15 mm f/4L Canon EF lenses can be used either as a complete framework and a fish-eye fish-eye camera on the circle, 35mm full-frame, but only as a full-frame EOS Digital SLR cameras on the fish-eye head and APS - C / H size sensor)
[Edit] Function Mapping
Mapping the location of the object sideways displacement leading to the center of picture image. This conversion is a way of mapping function. From the center of the picture "R" is dependent on the focal length f of the optical system, and optical axis angle '? '.Illustration of the importance of the concept R, F, and variables? In the standard use of the mapping function.

    The original channel was photographed, the camera's exterior wall to the left and center.

    Gnomonical

    Gnomonical, 40 ° right translation

    Linear scale (equidistant)

    Orthographic

    The same area (corner equisolid)

    Three-dimensional (FIT)
Ordinary (non-fisheye) lens:

    Gnomonical or perspective: R = Ftan (?). Like a pinhole camera. Lines remain straight (distortion free). "T" must be less than 90 °. Gaged symmetrical with the optical axis and opening angle must be less than 180 °. Large opening angle is difficult to design and lead to higher prices.
Fish-eye lens can have many different mapping functions:

    Linear scale (equidistant): R = F \ CDOT \ THETA Where? In radians. Practical point of measurement, for example, star maps. Panotools so use this type.
    Orthography: R = FSIN (?). It looks like a ball and lying on the environment <maximum. 180 ° opening angle.
    The same area (equisolid angle): R = 2fsin (? / 2). Each pixel subtends the same solid angle, or the same region-wide unit. It looks like a mirror ball, best special effects (high distance), for comparison area (cloud level determined). This type of popular, but it is the object of margin compression. The high price of the lens, but not extreme.
    Three-dimensional (right): R = 2ftan (? / 2). The map is ideal for photographers, because it does not compress as much as the edge of the object. Sanyo is the only manufacturer not make such a fish-eye lens. These lenses can be based on different brandnames. Mapping software is easy to achieve.
    Other mapping functions (such as adjustment of the lens distortion) [17] may also improve off-axis resolution fish-eye lens.
All types of fisheye lens bend straight lines. Opening angle 180 ° or more may be only a lot of barrel distortion.[Edit] See also

    Map projection
[Edit] References

    ^ Hill, R. 1924. A camera shot of the entire sky. Royal Meteorological Society Quarterly 50:227-235.
    ^ The formula is \ {FOV text} = 4 \ CDOT \ arcsin \ left (\ frac {\ text box the size of the} {} {4 \ CDOT \ text {focus}} \ right) from the reverse mapping function; Dyxum , Gustavo Orensztajn
    ^ AF DX Fisheye-Nikkor 10.5 mm f/2.8G ED Lens Specifications
    ^ Miniature fish-eye lens
    ^ HTTP: / / www.sigma-photo.com/lenses/lenses_all_details.asp?id=3336&navigator=64.5 mm F2.8 EX DC HSM Fisheye notice
    ^ "Additional information 6 mm f/2.8 Fisheye-Nikkor lens." Malaysia network resources. Access 2008-11-11.
    ^ "Additional information 6 mm f/2.8 Fisheye-Nikkor lenses: 70 over." Malaysia network resources. Access 2008-11-11.
    ^ Sunex
    ^ SuperFisheye
    ^ [1]
    ^ AF DX Fisheye 10.5mm ED f/2.8G-Nikkor
    ^ MC Zenitar
    ^ Sigma EX DG15 mm f/2.8 diagonal fisheye
    Olympus ZUIKO DIGITAL ED8 mm f/3.5 fisheye lens ^
    ^ "Sanyo 8 mm f/3.5 lens Aspherical IF MC Fish-eye." lenstip.com. Retrieved 14/08/2009.
    ^ Sanyo 8 mm f/3.5 fisheye lens CS
    ^ To adjust the lens distortion
[Edit] External links
 Fish-eye image categories:

    Fish-eye projection theory
    Fisheye List
    Glimpse of the fish-eye distortion effect
    Fisheye camera