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| p.12 #19 · Sigma DP2 Merrill: Have any of you tried it? |
Well, I have not read this all of this very long thread. But what are the pros and cons of the DP1/2, and the Sigma/Foveon cameras?
Looks like a logical sensor design - I mean, when digital was invented (not so long ago), why did they not use the Foveon design, which is similar to film (3-layered color filter on top of the sensor), and insted a Bayer sensor (color filter array). Was it because the thickness of the 3-layered filter decreases the amount of light too much? Other reasons? And reasons to stick with Bayer? I mean now we got ISO 200 000 cameras, so surely the pros and cons have changed since the invention of digital. Why stick with Bayer? Can't you get more light having bigger pixels in the sensor? In the end, it seems you need more (for the same resolution) small pixels in a Bayer, and that would lead to less light gathering? Got to be more than ISO sensitivity issues I reckon... (do not see how a 3-layered filter could be patentable, not really new is it?). So, what are the cons....?
I think you're seeing the cons in the DP2M: extreme data throughput and processing requirements leading to slow camera performance, poor battery life, and difficulty in achieving support from third-part raw processors.