Nope. Lens have resolution in 100s lpmm. It's the film that limits it to what it is. Strictly speaking, it's lens+film MTF. If a digital sensor comes with large values for hi-freq MTF, it will be possible to do just that -- stamp sized sensor that beats 35mm format resolution. Add to that lenses that have less coverage and better contrast/sharpnes -- and you've hot the winner.
Best, Mishka ----- Original Message ----- From: "Mark Roberts" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, September 24, 2002 6:36 PM Subject: Re: Pentax Digital SLR - a heretical viewpoint > Increasing the pixel count in a postage-stamp-sized CCD is like using finer > grained film with 110 Instamatic film. Part of the reason for using a full-frame > sensor in a digital camera is the same as using 35mm film over APS or medium > format over 35mm: The larger area you're using, the better your analog > resolution (in lpm), regardless of your digital resolution (megapixels). > > Take for example a full-frame sensor (36mm wide) and the Nikon D100 sensor > (23.7mm wide). > > So if you use a lens with a resolution of, say, 50 Line Pairs per Millimeter, > you'll get a total of 1800 line pairs across the width of the full frame but > only 1185 across the width of the D100 frame. > > Using these figures, a 10-inch wide print from the full-frame camera would have > a resolution of 7.09 lpm but the same size print from the D100 would have a > resolution of only 4.67 lpm. > > And that's using the exact same lens. > And sensors with the exact same megapixel count. > > If you use a lens with 100 lpm resolution, you'll get better resolution with > both cameras, and you may not be able to tell the difference in a 10-inch-wide > print. But you will with bigger prints (and now that we're seeing cameras with > over 10- megapixel sensors, that's even more of a consideration). The > small-sensor digital cameras will be fine for typical APS or 35mm > point-and-shoot users, but the larger sensors will appeal to the serious > enthusiasts. > > As the medium format brotherhood is fond of pointing out, there's no substiture > for actual image capture size. > > -- > Mark Roberts > www.robertstech.com > Photography and writing > > >
