Digital BW, The Print

In a message dated 12/15/2004 9:31:43 AM Pacific Standard Time,  
DigitalBlackandWhiteThePrint@yahoogroups.com writes:

Subject:  Re: Black and white only digital camera


I agree. I have never been  overly convinced that a monochrome 6 
megapixil sensor would be noticably  sharper than an RGB-bayer-pattern 
6 megapixil sensor. The interpolation  that occurs for RGB sensors is 
performed to maintain color accuracy, and  shouldn't have a 
significant effect on sharpness. I.e., the effect might  be 
measurable, but I'll bet not  visible.

...Ben



Not true. Even Dr. Bayer, the inventor of the method that's used in all  
modern monnochip cameras (except the Foveon) says that the GREEN channel is used  
for the luminance/sharpness information, so a 6 Megapixel Color camera is 
really  only 3 for B&W. The Foveon is 3.5, but wait, there is NO Anti Aliasing  
filter to fuzzy things up to 1/2 to 1 additional pixel, making the 6 Mpx Bayer  
camera about a 1.5 Megapixel in terms of real sharpness vs. the Foveon's 3.5 
(2  1/3 times better, yes). BTW the Foveon/Sigma SD-10 interpolates to a 14  
Megapixel file in the RAW software, which Rivals the Canon 11 Megapixel and the  
Kodak 13.5 Megapixel in terms of B&W performance.
 
Claude


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