Digital Camera News and Reviews

Sigma 50-500mm f/4-6.3

SLR Gear has tested the Sigma 50-500mm f/4-6.3 EX DG HSM APO RF lens (also known as Bigma). This lens has an impressive zoom range that fit the needs of birders and wildlife photographers so it is interesting to see how the picture quality is at the long end of the zoom. The Sigma 50-500mm is available for many different camera mounts including Canon, Nikon, Four-Thirds, Sigma, Pentax and Sony.

SLR Gear gives the Sigma 50-500mm f/4-6.3 EX DG HSM APO RF lens an ok review as the lens is not the sharpest lens they have ever tested, but what can you expect with such a big zoom range. At some focal ranges and apertures you can get pretty good results. Chromatic aberrations and distortion is also well controlled.
Overall this ultrazoom lens from Sigma seems interesting if you need a big zoom range for birding and wildlife photography.
Read the full review of the Sigma 50-500mm f/4-6.3 EX DG HSM APO RF lens here.

Sigma DP2

Dpreview has posted some interesting sample pictures taken with the Sigma DP2 Foveon camera. They have tested ISO sensitivities from 100 to 800, and also tested different color modes and pictures of different subjects.

Some key features for the Sigma DP2:
-14 megapixel Foveon sensor
-2.5″ LCD screen
-41mm f/2.8 lens
-ISO sensitivity from 50 to 1600
-weight 260 grams

Check out the sample pictures that Dpreview has taken with the Sigma DP2 here.

Sigma 50mm F1.4 EX DG HSM

Sigma has updated the firmware for thei Sigma 50mm F1.4 EX DG HSM lens for the Four Thirds format. Firmware version 1.1 include this update:
“Corrects to give an accurate compensation value for camera shake when the lens is used with a camera body incorporating an image sensor shift type image stabilization.”

Visit the Olympus firmware website to download firmware version 1.1 for the Sigma 50mm F1.4 EX DG HSM lens.

Sigma 10-20mm 1:4-5.6 EX DC HSM

Dpreview.com has tested one of the widest lenses on the marked, the Sigma 10-20mm 1:4-5.6 EX DC HSM lens. They have tested it for the Nikon F mount, but the lens is also available for Canon, Sigma, Sony, Pentax and the Four Thirds format.

Andy Westlake of Dpreview ends up giving the Sigma lens a “Recommended” rating because it is able to take pictures with very little chromatic aberration, it has good build quality, fast and silent auto focus and it is very wide.
The only downsides are that the lens is not the sharpest one on the marked and there is distortion at the widest angle (10mm).
Read the full review of the Sigma 10-20mm 1:4-5.6 EX DC HSM lens here.