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Sigma 20mm f/1.8 EX DF RF Aspherical Wide Angle Lens for Nikon SLR Cameras Reviews
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Sigma 20mm f/1.8 EX DF RF Aspherical Wide Angle Lens for Nikon SLR Cameras Overview:
- Lens Construction: 13 Elements in 11 Groups Angle of View: 94.5 degrees Number of Diaphragm Blades:
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Sigma 20mm f/1.8 EX DF RF Aspherical Wide Angle Lens for Nikon SLR Cameras Reviews
34 of 38 people found the following review helpful 
AMAZINGLY SHARP AND FAST SUPER-WIDE ANGLE, May 7, 2006 By Canon "Rock" (United States) - See all my reviews This review is from: Sigma 20mm f/1.8 EX DG RF Aspherical Wide Angle Lens for Canon Digital SLR Cameras (Electronics) I have used this lens extensively with the 1D and the Rebel XT. Results have been excellent. My suspicion is that the previous reviewer got a defective or damaged copy of the lens. It is incredibly sharp, even at f1.8, which I did not expect - generally you expect a lens to be a bit soft wide open, especially 1.8. The degree of sharpness of this lens is quite surprising.
I have used, for example, both the Canon 50mm f1.8 and the Canon 35mm f2.0, both of which are deservedly renowned for their sharpness and contrast. I find this lens to be sharper than either of them wide open. The lens provides images which have excellent color saturation and contrast. Of course, at f1.8, depth of field is razor thin, by design, which is great for bokeh or out of focus background, but which also requires care concerning the desired focal point being in focus. Speaking of bokeh, I find it to be very attractive compared to any other lens I have used.
Its minimum distance... Read more
9 of 9 people found the following review helpful Best Indoor Lens for Your Pentax SLR !, March 28, 2008 By This review is from: Sigma 20mm f/1.8 EX DG RF Aspherical Wide Angle Lens for Pentax and Samsung SLR Cameras (Electronics) If you want to take indoor shots with your SLR, this lens will let in enough light to stop the action. It also will work on your film camera for those REALLY wide-angle shots. I typically use prime lenses for shooting indoor shots and this is one of the best, because of the wide angle (30mm equivalent), sharpness, and speed. No other wide lens has the speed of this one (f1.8). I have taken shots in DIM light without flash that have come out great. My best 3 lenses for indoors are this one, a Pentax 35mm F2.0, and a Pentax 50mm F1.4. I have a Sigma 28mm F1.8, but it is not as sharp or useful as this one. The only drawbacks are the size and the cost of a filter that fits this (82mm filters are NOT cheap).
12 of 13 people found the following review helpful Ultra-wide lens with sharpest optics!, June 5, 2004 By Denzil Thakur (Dubai, UAE) - See all my reviews Sigma 20mm EX is an exceptionally well made lens. Performance is extremely satisfactory. It is almost indispensable for me to go without it when I am outdoors. Takes very good wide angle shots of buildings, parks and friends and family picnicking in the park. Shots have come very sharp and crisp with edge to edge brightness and sharpness. 20mm wide angle focal length gives you a very large depth of field which is essential for taking shots of wide open outdoors, filling your frame with a large expanse of ground/sky. Fast f1.8 aperture will let you take snaps indoors in natural light and hand-held shots of lighted buildings etc. in night time. Rear focusing feature of this lens results in fast AF and also the length of the lens remains same. Macro shots of subjects will give you convex mirror type of fascinating images and one can produce far more interesting effects depending on one's creativity.Indoor flash photography may give rise to vignetting due to ultra wide nature of the... Read more
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| 34 of 38 people found the following review helpful AMAZINGLY SHARP AND FAST SUPER-WIDE ANGLE, By Canon "Rock" (United States) - See all my reviews This review is from: Sigma 20mm f/1.8 EX DG RF Aspherical Wide Angle Lens for Canon Digital SLR Cameras (Electronics) I have used this lens extensively with the 1D and the Rebel XT. Results have been excellent. My suspicion is that the previous reviewer got a defective or damaged copy of the lens. It is incredibly sharp, even at f1.8, which I did not expect - generally you expect a lens to be a bit soft wide open, especially 1.8. The degree of sharpness of this lens is quite surprising.I have used, for example, both the Canon 50mm f1.8 and the Canon 35mm f2.0, both of which are deservedly renowned for their sharpness and contrast. I find this lens to be sharper than either of them wide open. The lens provides images which have excellent color saturation and contrast. Of course, at f1.8, depth of field is razor thin, by design, which is great for bokeh or out of focus background, but which also requires care concerning the desired focal point being in focus. Speaking of bokeh, I find it to be very attractive compared to any other lens I have used. Its minimum distance... Read more 9 of 9 people found the following review helpful Best Indoor Lens for Your Pentax SLR !, By This review is from: Sigma 20mm f/1.8 EX DG RF Aspherical Wide Angle Lens for Pentax and Samsung SLR Cameras (Electronics) If you want to take indoor shots with your SLR, this lens will let in enough light to stop the action. It also will work on your film camera for those REALLY wide-angle shots. I typically use prime lenses for shooting indoor shots and this is one of the best, because of the wide angle (30mm equivalent), sharpness, and speed. No other wide lens has the speed of this one (f1.8). I have taken shots in DIM light without flash that have come out great. My best 3 lenses for indoors are this one, a Pentax 35mm F2.0, and a Pentax 50mm F1.4. I have a Sigma 28mm F1.8, but it is not as sharp or useful as this one. The only drawbacks are the size and the cost of a filter that fits this (82mm filters are NOT cheap). 12 of 13 people found the following review helpful Ultra-wide lens with sharpest optics!, By Denzil Thakur (Dubai, UAE) - See all my reviews Indoor flash photography may give rise to vignetting due to ultra wide nature of the... Read more |
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