Archived posting to the Leica Users Group, 2003/09/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Ok, so Leica has to design lenses with with a collimator lens at the rear. Would that have a negative impact on image quality? I pitched the Foveon, because I found the images that I have seen from the SD9 to be very pleasing. They are sharper and don't exhibit a lot of the artifacts that I see in images from lets say a 10D. Again, I'm just a layman when it comes to the technical mombo jumbo of designing these thing, but I'm just tossing out an idea. Personally I have very little desire for a digital M or any other digital camera. I'm not a working PJ who has to email his images from some foxhole and frankly I like playing around with film, chemicals etc. As it is I spend far too much time in front of a computer at work, so it's the last thing I want to see when I get home. feli On Monday, Sep 1, 2003, at 12:26 US/Pacific, JCB wrote: > The problem is that the Foveon chip is WORSE in this respect than > conventional CCD/CMOS Bayer pattern chips. Why? Because the green and > red sensors are deep within the chip rather than on the surface. If > you want to really see color fringing out on the edge of a digital > photo, using a wide angle lens, just use a Foveon chip. I have a > friend that works at Foveon and have seen the results first hand. Or > you can go buy a Sigma/Foveon and see for yourself. > > http://www.foveon.com/X3_tech.html > > The only answer to the wide angle lens - sensor acceptance angle > problem is to design digital specific lenses which have a collimator > lens at the rear to re-angle the light rays straight down onto the > sensor. One lens manufacturer is already doing this. > > JB _______________________________________________________ They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety. -Benjamin Franklin feli2@earthlink.net - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html