Originally posted by HoustonBob Take any 35mm color film you want put it in an MZS use the same lenses on a K-1 and the K-1 will blow the color film away - and it won't be close. I did an awful lot of color film photography 45 years ago - it isn't even close.
I also did an awful lot of color film photography 45 years ago and continue to do so. I also shoot the same lenses on my film cameras as on my K-3. Those lenses perform much better on the K-3 than with Ektar 100 and much better on Ektar 100 than with Kodachrome (any version). Strangely, this is true across the board even for my consumer-grade vintage lenses.
Is Ektar 100's ability to capture detail (different than resolution) equal to my K-3? No, I don't believe so, though it may be close to that of your K-1. This sort of discussion could go on and on. Kodak publishes the MTF data for their films and the Web is full of many comparison images. It is a rat hole and not pertinent. The issue is not how well film resolves, but how well lenses perform.
Going back to my first paragraph, evidence from actual use disputes the assertion that "designed for film" lenses intrinsically perform poorly with high resolution media. The Pentax-M 50/1.7 was tested in-camera to 100 lp/mm by Modern Photography in the early 1980s using available films. I see no reason why a good copy of the same model should not do at least as well on your K-1. They appear to on my K-3.
Edit: It would be interesting to see how many "digital design" lenses resolve to 100 lp/mm.
Steve
Last edited by stevebrot; 05-21-2016 at 10:16 AM.