Upload & Sell: Off
Here is a blog by Gary Mercer - an accomplished DP2 M user.
Interesting blog piece Rick, though Mercer clearly shows a complete lack of understanding about Bayer sensors that don't have AA filters, such as the Leica DMR, the Leica M8 & 9, Kodak SLR C, and all medium format sensors... to name a few. He states in paragraph 7: "There is NO bayer sensored camera that is capable of capturing the paper texture without blurring the details due to the anti-aliasing ( blur) filters on bayer sensors. Yes--I could use a bayer sensor camera sans the anti-aliazing filter, but the pattern in the paper would have created a moire problem."
This glaring lack of understanding misinforms and compromises the usefulness of the post and should be taken with a grain of salt, given this inaccuracy. I own both the DMR and the Sigma and love the Sigma for it's incredible per pixel resolution. I've shot both side by side with a lens on the Leica that comes close to approximating the fov of the Sigma and the Sigma kills it in terms of resolution! No contest. The Sigma has become my "pocket tech cam" because of it's superior resolution but the Leica DMR produces more accurate colors without question. It also captures paper texture beautifully with the 100 APO Macro or 60 Macro lens and there is no moiré in spite of the lack of an AA filter. Of course, both of the aforementioned lenses are better suited than the 45mm focal length of the Sigma to photographing flat art... but his test was about how the Sigma excels at photographing art.
The use of the 35 f1.8 lens on the Sony A77 is also a very poor choice for art reproduction as this lens is not designed for such. When doing a test where art reproduction is the goal it makes no sense to try and compromise the end results by selecting a lens for the Sony that approximates the focal length of the Sigma lens. A macro lens on the Sony would have done far better, since the artist Carlos Estevez commented on the superior image rendering detail of the Sigma.
The DMR or A77 with a macro lens are both far more expensive than the Sigma so I don't mean to imply in any way that this is a fair comparison, but Mercer states that there is NO Bayer sensored capable of capturing the details due to the AA filter on Bayer sensors, and this is clearly not true. Serious art repro photographers are using medium format backs for art reproduction, and the multishot backs excel at this type of work. The aforementioned have no AA filters and do a far better job of reproducing color accurately than the Foveon can.
That Mercer is very happy with his DP2M is obvious. I'm equally happy with my DP2M for landscapes... though the colors require adjustments in certain areas that I don't have to adjust on my DMR (though I'll gladly make these adjustments with the DP2M colors since the image is so much sharper and capable of being printed larger than those from the DMR). The glaring inaccuracies regarding Bayer sensors and the poor choice of lens on the Sony A77 reduce this review to one of fanboy enthusiasm rather than an accurate comparison,