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Topic: Fisheye lens

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	Fisheye Photos and Theory
		A 15mm fisheye is described as a distorting lens, while a 15mm wideangle is "corrected".
		The fisheye is not a distorted perspective, it is actually the natural perspective for an extreme wide angle.
		None of the three full circle lens combinations I have used indicate what their mapping is, in fact I suspect that "semi fisheye" means that the makers are not altogether sure themselves.
	www.zeta.org.au /~andrewa/ajaa31.htm (869 words)

	Circular Fisheye Camera
		Fisheye photo of bridge and downtown Saskatoon: Parallel view, Cross view, Closeup (2d).
		This lens is a full frame fisheye which means that it is 180 degrees angle of view only on the diagonals.
		By checking infinity focus at the top, bottom, left and right of the image I could tell that the lens is slightly tilted relative to the film plane but only by the with of the 2.2 markings on the lens.
	www.angelfire.com /ca/erker/fisheye66.html (973 words)

	CameraHobby - Nikon 16mm f2.8D AF Fisheye Lens Review (Site not responding. Last check: 2007-10-12)
		The lens hood is a permanent feature to protect the slightly bulbous front element, which obviously negates the use of any front filter; however, as part of the package, Nikon supplies you with four rear-mount filters in a small pouch.
		The 16mm lens offers a 180-degree view of the world, but keep in mind that this is measured diagonally across the film frame, not horizontally as would be the case with regular wide-angle lenses.
		The lens is a hoot to use and spectacular for seeing the world as your move the camera up and down and all around, seeing in a different way.
	www.camerahobby.com /Review-16mm.htm (1351 words)

	Fisheye Lenses: Nikon FC-E8 and FC-E9
		Fisheye Lenses: Nikon FC-E8 and FC-E9 Fisheye Lenses: Nikon FC-E8 and FC-E9
		Since the fisheye converter FC-E8 is heavy, the Photosolve 37-28mm thread converter is not able to hold it sturdy in the thread.
		In this case, the combo is a 7mm circular fisheye lens with a coverage of about 180 degree.
	www.cs.mtu.edu /~shene/DigiCam/User-Guide/A95/Lens/Fisheye.html (564 words)

	NEWS! - Olympus: New Zuiko fisheye lens
		The Zuiko 8mm fisheye is designed to be digital specific and render sharp edge-to-edge images, in an easy to handle size, and with a close focus of less than 5 ½ inches.
		This full frame fisheye lens has a 180º field of view diagonally to the Four Thirds image sensor, and a focal length of 8mm (equivalent to 16mm in a 35mm camera).
		ED Lens Element Used to Minimize Chromatic Aberration: By using an ED lens element, Olympus eliminates peripheral chromatic aberration, focusing all the colors accurately from edge to edge, which cannot be fully corrected with conventional optical glasses.
	imaging-resource.com /NEWS/1120143445.html (926 words)

	Computer Generated Angular Fisheye Projections
		An angular fisheye projection is defined so that distance from the center of the image is proportional to the angle from the camera view direction.
		Unfortunately if the projector uses a single fisheye lens then the standard fisheye projection as described here requires that both the lens and the viewer are located at the center of the dome, obviously impossible.
		This is a standard projector with their fisheye lens and as such the projector projects a 4:3 width to height ratio while fisheye images are 1:1.
	local.wasp.uwa.edu.au /~pbourke/projection/fisheye (1835 words)

	Fisheye Lens Shader for Renderman
		The fisheye lens angle is set to 90 degrees, which is the same angle as the standard camera in the above scene.
		Here is the same scene viewed using the fisheye lens shader with the fisheye lens angle is set to 120 degrees.
		Here is the same scene viewed using the fisheye lens shader with the fisheye lens angle is set to 150 degrees.
	terpsichore.stsci.edu /~summers/viz/fisheye (298 words)

	Creating Environment Maps from FishEye Lenses
		This type of lens was first developed to allow astronomers to capture the entire hemisphere of the night sky with one photograph.
		At a certain point, around a 15 mm lens, it is just too hard to compensate for the distortion in the lens design, so lenses are instead designed with a predictable, analytical distortion: the fisheye lens.
		Fisheye lenses, on the other hand, should be though of as imaging to a spherical surface; this spherical surface is then flattened to record it on planar film.
	www.worldserver.com /turk/quicktimevr/fisheye.html (1977 words)

	Shutterbug: Fisheyes For Impact
		One of the most common shots taken at weddings using a fisheye lens is an overall photo of the church interior during the ceremony.
		Enter the fisheye lens, which is different and imparts a look to a photo that you can’t get any other way, even digitally.
		As you’d expect, the built-in lens shade is a little less than an exercise in futility, with four little slivers of fl metal that protect the lens from the sun as best they can on parts that aren’t in the picture.
	www.shutterbug.net /equipmentreviews/lenses/0899sb_fisheyes/index.html (1122 words)

	The Aggregate: Fisheye Digital Imaging For Under Twenty Dollars (Site not responding. Last check: 2007-10-12)
		Fisheye lenses for SLRs are expensive optics primarily because allowing space for the mirror to swing out of the way means the back focus of optics must be very large compared to their focal length...
		Carefully sealing the camera and lens using plastic wrap, the camera was mounted on the end of a 10' long PVC pipe and used to feed live video inspecting the underwater vegetation and fish population in Dietz's two half-acre ponds.
		The fisheye lens was there to fix the alignment, but it pretty much blocks access to the two tiny screws that mount the original lens and board to the back of the plastic case.
	aggregate.org /DIT/peepfish (11464 words)

	Wide angle choices for digital SLRs - Fisheye Lenses
		The second type is known as a "circular fisheye" and produces a 24mm diameter circular image in the center of a 35mm frame, with a 180 degree field of view all around.
		A 16mm fisheye on an EOS 20D, produces an image which, when "defished" has something like the horizontal field of view of a 20mm lens on a full frame camera (or a 12.5mm rectilinear lens on an APS-C sensor camera).
		There is also a 16mm f2.8 fisheye made in Ukraine called the "Zenitar" and I have a review of that lens elsewhere on this website (Zenitar 16/2.8 fisheye review).
	www.bobatkins.com /photography/reviews/wide-angle-lenses-2.html (876 words)

	Peleng 8mm F/3.5-16 fisheye lens review
		Average Japanese fisheye lens worth anywhere from 400$ for el cheapo models from Sigma to 4000$-5000$ precision models from other vendors.
		All there is about the lens is half a page explaining that you should focus with opened diaphragm, then close (or lock) the diaphragm and that's all.
		Fisheye distortion itself is interesting, and definitely can be used in pictures as is, just some cropping to cut of dark corners.
	www.zknives.com /dp/lens/peleng8mm.shtml (1574 words)

	Zenitar 16mm f2.8 fisheye lens for Canon EOS
		The Canon 15mm fisheye is quite expensive (around $600) so doesn't really make sense for a lens you may not use much.
		The lens comes with red, yellow and green filters which screw on to the rear of the lens and a small carrying pouch (or at least mine did).
		Well, you get a horizontal field of view which is about the same as that of a 20mm lens on a full frame camera - but you also get curved lines when those lines don't run through the cneter of the frame which is a characteristic of all fisheye lenses.
	www.bobatkins.com /photography/reviews/fisheye.html (792 words)

	Nikon D1 fisheye lens test (Site not responding. Last check: 2007-10-12)
		One solution is to optically convert the 6 mm fisheye lens image into a smaller image that correctly fits within the active area of the Nikon D1 image sensor.
		A lens coupling tube is needed to position the 6 mm fisheye lens at the correct point relative to the 85 mm lens.
		The above fisheye image was produced by a Nikon 6 mm f5.6 fisheye lens coupled to a Nikon D1 digital camera via an optical relay.
	www.nearfield.com /~dan/Photo/wide/fish/index.htm (581 words)

	Experiences with the Peleng 3.5/8 mm Fisheye
		For a detailed comparison of several fisheye lenses, see the report Fisheye lens designs and their relative performance by James Kumler and Martin Bauer.
		The lens cap is a good example for a ‘silly quirk’ that – although it doesn't directly affect the resulting images – simply cries for being fixed.
		Then you can use the lens to compose the image and before actually shooting you just have to remove the lens, lockup the mirror, mount the lens, shoot, remove the lens, release the mirror, and mount the lens again.
	www.pauck.de /marco/photo/stuff/peleng_fisheye/peleng_fisheye.html (2801 words)

	Experiences with the Kiev 3.5/30 mm Fisheye
		The only other fisheye that has a similar price range is the circular fisheye Peleng 3.5/8 mm that is used for 35 mm cameras.
		Although this fisheye is the most complex construction (10 elements in 6 groups) of all the lenses from Kiev, it has a very good reputation.
		As I don't have another full-frame MF fisheye to compare with, I can't say if this is a fault specific to the Kiev lens or the lens type in general.
	www.pauck.de /marco/photo/stuff/kiev_fisheye/kiev_fisheye.html (1377 words)

	Fisheye Lens Information
		The name Fisheye was coined by R.W. Wood to refer to any lens capable of imaging the entire hemisphere in object space onto a finite circle in the focal plane.
		Typical horizontal coverage of this type of Fisheye lens is around 140 degrees, typical vertical coverage is around 90 degrees, focal length is 15 or 16mm.
		Fisheye lens is not so commonly used; the prize is often higher compared to other wide angle lenses and it is generally considered as having very limited use.
	www.rugift.com /fisheye-lenses/fisheye-lenses.htm (787 words)

	Nikon fisheye lenses FC-E8 and Nikkor 10.5mm
		Fisheyes are some of the most fun, most extreme and most challenging lenses you can work with.
		Fisheye lenses were first developed for scientific purposes, but soon found their way into "normal use" (whatever that is).
		A circular fisheye lens is the only thing missing in Nikon's current digital lineup (September 2006), and I guess that can be used as an argument for Nikon to develop a full frame DSLR (which I'm convinced they already are, but that's another discussion).
	www.nikonweb.com /fisheye (1066 words)

	Lens Specs: 8mm f3.5 Fish Eye
		Shoot by land or by sea with the 8mm f3.5 fisheye lens.
		Designed for digital photography, this full frame 8mm fisheye lets you view and compose dramatic ultra wide-angle "fisheye" images of 180 degrees for dramatic photos with edge-to-edge sharpness.
		These results are further enhanced due to ED lens elements that minimize chromatic aberrations, a circular aperture diaphragm for natural-looking background blur, and multi-coating to reduce flaring and ghosting.
	www.olympusamerica.com /e1/sys_lens_8mm.asp (171 words)

	Olympus Zuiko Digital Fish Eye lens: Digital Photography Review
		The lens has a special multi-layer coating designed to reduce susceptibility to ghosting and flaring and its ED element will help keep chromatic aberration to a minimum.
		An ED element is used to ensure chromatic aberration is kept to an absolute minimum, whilst the special multi-coating process that the lens undergoes during the manufacturing process substantially reduces susceptibility to ghosting and flaring.
		The lens is also resistant to dust and water droplets so remains protected under more challenging conditions such as an unexpected rain shower.
	www.dpreview.com /news/0506/05063001olympus_fisheye.asp (517 words)

	0.42x Fisheye Adapter Review
		For some reason fisheye lenses tend not to be all that common on the used market, and seem to hold up their value pretty well when they do appear.
		(Of course, fisheye lenses have to have rather minimalist hoods owing to their great field of view, so this isn’t very surprising) There are soft plastic caps for both the front and rear of the adapter, but they tend to fall off when the adapter isn’t in its storage bag.
		The lens “glass” of the fisheye section itself appears to be a single lump (possibly two) of moulded plastic, and is uncoated.
	photonotes.org /reviews/fisheye-adapter (1504 words)

	8mm peleng lens :: muellerworld
		The 8mm, 180° circular fisheye is a special-use lens.
		Overall, I have been pleased with the lens for casual use, but it is not as sharp as my Nikon 8mm (in mid-2004, after 4 years without one, I broke down and bought a used Nikkor 8mm lens from KEH in Atlanta, Georgia)
		There are other versions of the circular fisheye (7.5mm, 8mm, 10mm), many of which I haven't mentioned, but one that is sure to instill awe is the massive Nikon 6mm, 220 f/2.8, $14,000 monster...
	www.muellerworld.com /peleng (1281 words)

	Nikon Patent 6987623: Image size changeable fisheye lens system
		When a fisheye lens for a 35 mm film format SLR camera is attached to a digital SLR camera, the angle of view becomes severely narrow, so that a special effect of a fisheye lens becomes difficult to be obtained.
		When the lens system is attached to a camera having the maximum image size in the maximum focal length state, the lens system has an angle of view of 170 degrees or more.
		When the lens system is attached to a camera having the minimum image size in the minimum focal length state, the lens system has an angle of view of 170 degrees or more.
	www.nikonweb.com /patent6987623 (949 words)

	Canon EF 15/2.8 Fisheye Lens Review
		The Canon EOS 15 fisheye has an advertised 180 degree angle of view but it turns out to be corner-to-corner along the diagonal.
		It is a $700 lens so you don't have to live in constant terror that your dog will smush his wet nose against the front element.
		This is not a lens for every day, but in some ways I think I like it better than my 14mm rectilinear wide angle which was vastly more expensive.
	www.photo.net /canon/15-fisheye (531 words)

	Amazon.com: Canon EF 15mm f/2.8 Fisheye Lens for Canon SLR Cameras: Camera & Photo (Site not responding. Last check: 2007-10-12)
		Fisheye lens with a 180º angle of view for unique and intriguing effects.
		This ultra-wide fisheye lens presents a 180 degree angle of viewing, permitting a variety of intriguing effects.
		I don't tend to like the 1.6x crop on Canon's lower-end digital SLR cameras, but with the fisheye this has an interesting benefit: it's reasonably easy to use the fisheye as a standard wide-angle lens, since most of the distortion is removed by the 1.6x crop.
	www.amazon.com /Canon-15mm-Fisheye-Lens-Cameras/dp/B00009R6WN (1587 words)

	CameraHobby - Lens Accessories, Teleconverters, Extension Tubes
		I would like to own the Nikkor 16mm fisheye lens but at $1000, it does seem a bit frivolous to spend that kind of money for a lens that won’t see much action.
		Since my friend’s house was quite a distance from downtown I knew that the 80-200mm zoom lens would be the one to use to try and isolate certain parts of the scene instead of using a wide-angle lens and capturing everything in miniature.
		Say you have a medium format 150mm lens that is classically known as the portrait lens for providing the shooter with a flatter perspective as well as a comfortable distance to the subject.
	www.camerahobby.com /Access-LensAccessories.htm (3248 words)

	William C. Wake's Blog: Fisheye Lens Project Management (Site not responding. Last check: 2007-10-12)
		This has several problems: the sheer mass of data makes it hard to see what's really important, the plan is vulnerable to changes in direction, and it's hard to keep up to date.
		There's a type of lens known as a fisheye lens.
		This lens gets a 180-degree field of view, so it shows a much wider area than a typical lens.
	weblogs.java.net /blog/wwake/archive/2004/02/fisheye_lens_pr.html (273 words)

	Todd's 16mm Fisheye lens page (Site not responding. Last check: 2007-10-12)
		It being roughly the size of a 50mm prime lens, I make room for it in my bag, and pull it out from time to time to see what it can do.
		The images selected for inclusion here are to illustrate the angle of view of the lens, and how the distortion looks and can be managed.
		About the same relative position as the previous photo, this was taken with a 20mm lens so you can compare the angle of view.
	www.thepeaches.com /photography/16mm.htm (344 words)

	Fisheye MC Zenitar-K (Pentax) 16mm f/2.8
		Super wide-angle, short-focus, compact, interchangeable lens which is intended for SLR cameras with 24x36mm frame format.
		The lens is fitted with an instant opening diaphragm and equipped with a set of light filters.
		The Zenitar-K 16mm f2.8 Fisheye lens is a compact short-focus, super wide-angle lens that provides you with a full-frame exposure (not a circle spot on the frame) that shows an ultra wide-angle 180 degree field of view.
	www.zenit-camera.com /zenitar_k_fisheye_lens.htm (313 words)

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