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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
User: Big G
IP 64.12.x.x
Date: 2009-06-27 10:33:21
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
User: marcinek
IP 217.153.x.x
Date: 2009-06-23 04:43:29
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 :-)


Build quality 0 1 2 3 4 5
Optical quality 0 1 2 3 4 5
Value for money 0 1 2 3 4 5