by wim arys | Aug 15, 2014 | Sigma, camera reviews
Sigma dp2 Quattro: the review Foveon X3 sensor Much has been written about the Foveon sensor design. It consists of 3 stacked layers embedded in silicone. Silicone absorbs different frequencies of light at different depths, so the Foveon sensor uses this natural...
by wim arys | Aug 14, 2014 | Sigma, camera reviews
Sigma DP2 Quattro vs. Sony A7s vs. Sony A7r Introduction With the release of the much talked about Sony A7s and the latest 3-layer Foveon sensor Sigma DP2 Quattro, I thought it would be a good time to compare these two cameras. The Sigma DP2 series cameras have a...
by wim arys | Aug 9, 2014 | news
London with the Sony A7s London, England, thousands of people visit this metropolis every year. Every tourist seemed to be carrying a camera, but I was the only one with a Sony A7s. Seems like the fixed lens compact zoom is still king for travel, boy are they missing...
by wim arys | Aug 5, 2014 | Sigma, camera reviews
Sigma DP2 Quattro: lens sharpness Introduction The Sigma DP2 Quattro would have benefited from a faster lens, especially for focussing in low light. f/2.8 is what you’d expect for a fixed zoom lens and not for a fixed 30mm prime, but the good news is that...
by wim arys | Aug 4, 2014 | Sigma, camera reviews
Sigma DP2 Quattro: ISO and sharpness Sigma’s unique selling point: the Foveon Sensor The main advantage of Sigma cameras is their unique Foveon sensor, developed by Sigma themselves. All other image sensors have just one layer of pixels, capturing just one color...