Review of Sigma DP2Q

There will be people explaining to you that what some see as blotching because they are looking for it is indeed not blotching but natural light. When I take the same image with multiple cameras and see the identical color whether a Sigma, a Canon, a Nikon, a Pentax, a Sony, an Olympus or a Fuji, I can pretty well be assured that this "color" is actually there. Then when I examine the scene with my own eyes and see the color I assume the lens sees what I see.

You mentioned the color in the bulls fur. I posted links to multiple images of Black Angus cattle made with multiple cameras which showed purple/blue color. Did you actually "look" at them??? Yes there are blotching issues with Sigma cameras. No, not all blue/purple/green coloration in fur, feathers or alphalt is blotching. Multiple images of the Grey Crowned Crane were also presented and many of them showed the magenta colors being blamed on a fault in the Sigma sensor.

Sometimes the blotching appearance is natural and sometimes it isn't, but if you look for it long and hard enough you may find it. If it's a big problem for you, don't use Sigma cameras - it's really quite simple. Purple fringing was very common with some model Sony cameras a few years ago. It was easily removed or ameliorated and it didn't stop photographers from making beautiful images with these cameras. It's incredibly easy to remove the blue/purple color from the fur of black animals regardless of whether it is natural or a sensor fault. If you can't live with that, then use a Canon or Nikon or other camera. Just warning though - I have over 40 digital cameras and I have to remove these assumed imperfections, if I choose to do so, from images made with every single one of them.

Best regards,

Lin

maceoQ wrote:

Ceistinne wrote:

The Q is, in my opinion, a very good camera indeed and not in any way as prone to blotching as you indicate. I have taken many images with one and have seen no blotching.

After studying many, many quattro images i can say, that the blotching/color noise is worse compared to the Merrills. It's often disturbing already at ISO 100.
Maybe Sigma still need to fine tune the camera and SPP, but for now i would not buy the camera for it's image quality.
Other things may be improved, but the main point to buy a Sigma camera is image quality, all other things are better anyway with probably any other serious compact camera.

But i'm sure, there will always be the people telling us that the blotching is a natural phenomenon of light reflecting in the birds feathers, in the bulls fur or that there was oil on the asphalt