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Sigma 10-20 mm f/4-5.6 EX DC HSM
Specifications:
| Manufacturer | Sigma |
|---|---|
| Model | 10-20 mm f/4-5.6 EX DC HSM |
| Lens style | Wide angle zoom |
| Focal length | 10 - 20 mm |
| Maximum aperture | f/4 - 5.6 |
| Angle of view | 102.4 - 63.8 o |
| Closest focusing distance | 0.24 m |
| Maximum magnification | 1:6.7 |
| Minimum aperture | 22 |
| Number of diaphragm blades | 6 |
| Auto focus type | AF HSM |
| Lens Construction | 14 elements / 10 groups |
| Filter diameter | 77 mm |
| Macro | No |
| Available mounts | Canon Nikon KM/Sony Sigma Pentax/Samsung |
| Dimensions | 83.5 x 81 mm |
| Weight | 470 g |
| Additional information |
Average rating (2 owners reviews).
| Build quality | 4.00 |   |
|---|---|---|
| Optical quality | 4.00 | |
| Value for money | 5.00 | |
| Overall | 4.33 |  |
| Build quality |  |
|---|---|
| Optical quality | |
| Value for money | |
| Overall | |
Owner since: 2 years
Price: $A 380
User profile: Amateur
Cons: Some field curvature at the edges Other website/listservs cite uneven manufacturer quality control, especially decentering Lens hood does not engage easily (minor)
Pros: Great landscape lens Color transmission, without filters, is brilliant
Summary: A great lens for all super WA zoom purposes purchased at what was a great price. Original equipment prices for comparable Canon/Nikon items are twice as much and probably afford only slightly better image quality, if even that.
| Build quality | |
|---|---|
| Optical quality | |
| Value for money | |
| Overall | |
Owner since: 1 year
Price: $400
User profile: Semipro
Cons: This is EX lens, and I expect excellent quality. After a 6 months of usage, zoom ring started rotating too easily. I prefer its initial resistance. This is why only 4 for build quality was given. I feel it steels some parts of blue-green spectrum, but I have to wait for transmission tests on lenstip.com to confirm.
Pros: True wide angle for DX/APS-C users. Very good distortion performace (for such a crazy angles).
Summary: It nedds to be stopped down to f/8-11 to get really sharp images. But it offers usefull quality for all apertures. Another must-have lens for DX/APS-C user. Best used outdoor. A piece of my weekend packing routine: D300 +N1.8D +N70-300VR + S10-20 :-)
