Best Price Sigma 15-30mm f/3.5-4.5 EX DG IF Aspherical Ultra Wide Angle Zoom Lens for Sigma SLR Cameras
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Sigma 15-30mm f/3.5-4.5 EX DG IF Aspherical Ultra Wide Angle Zoom Lens for Sigma SLR Cameras Reviews
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Sigma 15-30mm f/3.5-4.5 EX DG IF Aspherical Ultra Wide Angle Zoom Lens for Sigma SLR Cameras Overview:
- Ultra wide-angle zoom lens designed for Sigma digital SLR cameras
- 15-30mm focal length
- 3.5-4.5 maximum aperture
- Super Multi Coating reduces flare and ghosting that tends to occur when using digital SLR cameras
- 17 lens elements in 13 groups; aspherical elements at front and rear lens groups
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Sigma 15-30mm f/3.5-4.5 EX DG IF Aspherical Ultra Wide Angle Zoom Lens for Sigma SLR Cameras Reviews
8 of 8 people found the following review helpful 
Superb at 15mm-great landscape lens for Sigma SD14, February 13, 2008 By This review is from: Sigma 15-30mm f/3.5-4.5 EX DG IF Aspherical Ultra Wide Angle Zoom Lens for Sigma SLR Cameras (Electronics) I bought a used 15-30mm EX lens on Ebay late last year and have been using it on an SD14. At the widest end (15mm and F11), image quality is simply splendid. Great contrast, color and resolution with a sharp image running right off either end of the frame with sharp corners. Depth of field is enormous at 15mm, even when just set to infinity, resolving sharp near-foreground and distant background elements together. There is a small amount of CA which seems to increase a little as you focus closer than infinity. There is some distortion, but this is not apparent in landscape shots.
Image resolution is very good at all focal lengths--but from 19mm through 30mm, the aperture needs to be stopped down to F14 to get the best corner resolution. Image distortion and CA diminish at longer focaL lengths.
The lens is big and so somewhat awkward, but surprisingly light for its size. Auto-focus with my copy is inconsistent (often focusing well past infinity), so I just put... Read more
› See the customer review...
| 8 of 8 people found the following review helpful Superb at 15mm-great landscape lens for Sigma SD14, By This review is from: Sigma 15-30mm f/3.5-4.5 EX DG IF Aspherical Ultra Wide Angle Zoom Lens for Sigma SLR Cameras (Electronics) I bought a used 15-30mm EX lens on Ebay late last year and have been using it on an SD14. At the widest end (15mm and F11), image quality is simply splendid. Great contrast, color and resolution with a sharp image running right off either end of the frame with sharp corners. Depth of field is enormous at 15mm, even when just set to infinity, resolving sharp near-foreground and distant background elements together. There is a small amount of CA which seems to increase a little as you focus closer than infinity. There is some distortion, but this is not apparent in landscape shots.Image resolution is very good at all focal lengths--but from 19mm through 30mm, the aperture needs to be stopped down to F14 to get the best corner resolution. Image distortion and CA diminish at longer focaL lengths. The lens is big and so somewhat awkward, but surprisingly light for its size. Auto-focus with my copy is inconsistent (often focusing well past infinity), so I just put... Read more |
› See the customer review...
