Sigma 20mm f/1.8 EX DF RF Aspherical Wide Angle Lens for Minolta and Sony SLR Cameras
by SIGMA
Our Price: $629.00
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Category: Digital Camera
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Digital Photo Product Details
Manufacturer: SIGMAModel: B00005RKSM
Accessories:
- AmazonBasics Camcorder/Camera Bag with Shoulder Strap (Black)
- Corel Photo & Video Pro X3 Bundle [Old Version]
- AmazonBasics Universal Camera Case for Digital Cameras HF (Black)
- Sigma EX DG 82mm Multi-Coated UV Filter
- B+W 82mm Slim-Line Clear UV Haze with with Single Coating (010)
Digital Cameras Photo Reviews of Sigma 20mm f/1.8 EX DF RF Aspherical Wide Angle Lens for Minolta and Sony SLR Cameras
Customer Review: A bargain for digital SLR users
Summary: 5 Stars
This was almost always the lens of choice for me on my Sony Alpha A100. I cannot comment on it's capibilities for full-frame cameras, but for almost all Sony/Minolta digital users, this will not be an issue anyway. The 1.8 aperture, combined with Sony's anti-shake feature allow for some really nice low-light photography.
It worked equally well for candid portaits and any kind of landscape photos on the Sony, I was surprised how much wider it felt than the standard 24-xx mm zoom lenses, and the quality was always miles ahead.
Downside: not the fastest focusing, and IQ in low light is not that great; it does tend to hunt for the correct focus. Not sure how much of that is the camera, and how much is the lens. Also, be prepared to get the lens focus calibrated in order to bring out the best from it.
Overall, great sharpness, color and contrast for the price.
Description of Sigma 20mm f/1.8 EX DF RF Aspherical Wide Angle Lens for Minolta and Sony SLR Cameras
Sigma 20mm f1.8 EX DG Aspherical RF is one of several EX Series lenses. It is the first 20mm Super wide-angle lens in the world with a large aperture of F1.8 and angle of view 94.5°. It has Macro focusing capability with a minimum focusing distance of 20cm/7.9inches (reproduction ratio 1:4). The iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus image. It incorporates an aspherical lens element in the front as well as rear lens groups, to minimize distortion, spherical aberration and astigmatism. The lens has non-vignetting optical construction, in order to obtain adequate peripheral brightness with open aperture. This is especially desirable for digital cameras. The lens incorporates a rear focus system eliminating front lens rotation, thus allowing the use of a Perfect Hood and easy use of polarizing filters. The lens also incorporates dual-focus mechanism. It is easy to hold the lens, since the focusing ring does not rotate during auto-focus, yet it provides adequate focusing torque of the focusing ring during manual focusing of the lens. The lens materials used in this lens are lead and arsenic free ecological glass.Lenses
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