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

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Price: $799.00    

Product Feature

• Digitally-optimized, circular fisheye auto-focus lens
• Produces circular images with an angle of view of 180-degrees when attached to a full-frame digital or 35mm film SLR camera
• Maximum aperture of F3.5, a minimum focusing distance of 5.5 inches, and a maximum magnification of 4.6x
• Super multi-layer lens coating reduces flare and ghosting
• Gelatin filter holder at the rear

Product Description

This circular fisheye lens produces circular images with an angle of view of 180 � when attached to a full-frame digital SLR or 35mm film SLR camera. It has a fast maximum aperture of F3.5 and a minimum focusing distance of 13.5cm (5.3). Sigma's super multi-layer coating and Special Low Dispersion (SLD) glass provide excellent image quality for digital and film SLR cameras. The special fisheye design allows maximum creative expression. *Full circle can only be captured with full frame 35mm format digital SLR and film SLR cameras. Auto-focus system This circular fisheye lens produces circular images with an angle of view of 180°and also incorporates an auto focus system to achieve accurate focusing that might be difficult through the camera`s viewfinder due to the extremely large depth of field. F3.5 maximum aperture This lens is perfectly suited for low light conditions indoors or at dusk. Close-up Photography This circular fisheye lens has a minimum focusing distance of 13.5cm (5.3) and a maximum magnification of 1:4.6 making it particularly useful for close-up photography. Excellent optical performance Special Low Dispersion (SLD) glass offer effective compensation of color aberration. Reduction of flare and ghosting Sigma's super multi-layer lens coating reduces flare and ghosting, a common problem with digital cameras and also creates an optimum color balance. An ideal lens for scientific applications Due to the quantifiable angle/area relationship it produces, this lens can be used for scientific applications such as solid angle measurements of cloud distribution over the sky, or vegetation distribution of the rain forest canopy. Gelatin Filter Holder A holder at the rear of the lens accepts gelatin filters.

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

I got mine about a month ago and am just back from 10 days in Italy, where I used this extensively.

Sharp, good flare control, lots of fun. The previous reviewer says something about the AF being slow-- which, while true, is only half the story. You're almost always going to be focusing at or near infinity, so it's actually very rare to have to wait. Because this lens has such wide depth of field, I actually usually keep it on manual focus and leave it near infinity.

Actually, the biggest challenge with this lens is composition-- it can be surprisingly hard to find a scene with interesting things in all directions. That said, this lens is *excellent* for inside buildings and crowded city streets. Be aware that outdoors, finding the correct exposure can be difficult for a number of reasons. I did significantly better in M (manual) mode than my camera was doing in A (aperture) mode. (reasons for difficulty include the dark corners in the frame which mess up the camera's metering in some modes, and the probability that the sun will be in the frame and/or there will be both very light and very dark areas in the frame)

This lens is excellent for making spherical panoramas, and for realllllly wide angle shots (I'm de-fishing a lot of my pictures with software).

(I use this lens with a Canon 10D)

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