I think you guy dont fully understand bayer and foveon type senosr differences or you wouldnt be floating numbers for a 3Mp foveon same as 6Mp or "9 Mp at most" bayer. 3Mp true color pixels like on the foveon, would need 12Mp bayer pixels for the same true color resolution. Reason is simple, it takes 4 bayer pixels to create on true color pixel like each pixel of the foveon type sensor features.
The bayer sensors are really only 1/4 the color resolution of the rating (6Mp is really 1.5MP true color, 10Mp is really only 2.5Mp true color, etc.) and what they do is cheat/upconvert the smaller color image X4 to get the color output the same number of pixels as the real monochrome number of pixels the bayer camera has. Thie is why when you look at any bayer sensor image at 100% it looks soft compared to higher resolution images ( from medium or large format cameras, etc. ) which are downsized to that same resolution. the image upconversion is somewhat of a scam really because they never really disclose that the outputted image on a bayer sensor camera has been interpolated/ upsized instead of being a true color resolution. jco -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Godfrey DiGiorgi Sent: Friday, March 09, 2007 7:19 PM To: Pentax-Discuss Mail List Subject: Re: Pentax and Foveon? On Mar 9, 2007, at 4:03 PM, John Francis wrote: > My impression (based on seeing the best Foveon could provide) is that > the 3MP Sigma produced results roughly comparable to those from a 6MP > Bayer Sensor. That's the impression I get from talking with John Bean, who has a lot of experience with the Sigma DSLR as well as a Pentax *ist DS and Olympus E-1. He stopped using the Sigma in favor of the Pentax as the Pentax has far cleaner noise characteristics at elevated ISO settings, but the Sigma's rendering qualities at low ISOs was excellent, judging by looking at his photographs. Godfrey -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
