Sigma dp2 Quattro Review, article.
Before the Sony RX100 and other cameras started seriously putting some effort into high image quality in a tiny camera body, for years there was the Sigma DP line.
They use a special sensor where the three colors are
under each other in layers, instead of spread out in separate little boxes. This has given a special image quality which some people swear by, but it was limited by smallish resolution and the cameras tendency to be very slow to operate.
Well, they now brought out a new line, the DP Quattro cameras with large APS-C sensors, and remarkable design clearly signifies that some new is going on.
The cameras have a new sensor, a bit different. It's a bit complex, so I refer you to the
article.
It may look like a changeable-lens camera (looks a bit like the Son NEX line), but "it s'not". The DP2 has a fixed 45mm-equivalent F:2.8 lens, which immediately seems a bit Blah to me. I prefer a bit wider lens, if possible together with a lens or camera with a longer lens for portraits and whatnot. And I think in this day and age, 2.8 is not at all fast. Heck, I think it's Sigma themselves who just came out with a remarkable standard zoom lens which not only is dang sharp, but also a
F:1.8 lens! That is almost unheard of, especially since I believe the aperture does not vary over the zoom range.
... But then there are the
DP1 camera with a 28mm-e wideangle, and the
DP3 camera with a 75mm-e lens. Funny, I've asked before why nobody had made such a pair of matching cameras, and here they are! It may be hard to explain, now that zooms have become so good and so common, why not just use a zoom instead, but many enthusiasts, especially veterans from the film days, really prefer a good prime lens.