Just Looking
Veteran Member
what line are you peddling here? Speaking as a Foveon zealot myself, let me say that I've never said anything like that the 6.3 MP bayer is really a 3.15 MP. On the contrary, I avoid such "equivalence" games like a plague. I prefer to just say what's objectively there, in conventional terms. The 6.3 MP Bayer has 3.15 Million green or luma sensors, and 1.575 Million of each of red and blue or chroma sensors. The 10.2 MP X3 in the Sigma has 3.4 Million green or luma sensors, and 3.4 Million of each of red and blue. What's a manipulation about just counting them the same way the Bayer people do?The Foveon people make the argument that all the CCD/CMOS -- Bayer
imaging is is a 1x upscale... they make the argument that a 6.3
MP Bayer CMOS is actually a 3.15 MP.... From these manipulations,
they justify their own MP ratings...
The original poster did have a good point, which I've verified in my own experiments with images from Canon Bayer cameras. That is, if you downsize to a number of pixels equal to the number of luma sensors, and then later upsize and make a big print, you lose very little relative to just upsizing from the original. Very little doesn't mean not at all, but it takes very close inspection to see the difference, if the prints are made equally sharp looking by the usual sharpening adjustments.
j