Originally posted by UncleVanya But... The old lens can produce stunning images on a modern camera that outperform what the best lens today can make on older digital slrs.
Maybe it depends on who you are and what your goals are.
We spent last weekend in Dearborn MI.
Last Saturday, while we visited Greenfield Village, I disciplined myself to use only a MIR-1 37mm M42 lens, which has developed a substantial following in the West since the fall of the "Iron Curtain".
On Sunday, while we visited next-door at the Henry Ford Museum, I disciplined myself to use only an Adaptall #44A 28-70mm lens using an M42 mount.
The purpose of these restrictions was to help me evaluate my "fail-safe" plan, to use my K-30 as an M42 camera if its Aperture Control were to fail, as seems to happen with that camera.
My conclusion was that I can do it - and I like the pictures - but I was so glad to get back to AF on Monday morning when we returned to the village and I used my regular 18-135mm DC lens.
Special occasions are different, but for regular day photography I want to think about composition and light, and it turns out that thinking about focusing is just a little more than I want to take on regularly.
And, I don't think I am very unique. Look at the uproar over the new lens - at the number of people who want the PLM instead of {noisy} screw-drive, who are willing to spend another $400 and sacrifice a tiny amount of aperture to get it - but don't want to sacrifice the camera they bought three, four, five years ago.
And based on the number of people who {apparently very honestly} say "I hate to get rid of this lens, I love it but I just don't use it, and I need the space/money", I am quite confident in saying that there is a fair amount of churning in a typical person's collection of lenses. {the guy who sold the #23A to me made of real pain of himself wanting to be sure that I took good care of his "baby"}. So, my conclusion is that lens ownership today is more like marriage is today than what marriage was - you're not making a lifetime commitment; get what seems to be right with the knowledge that you can always re-examine the whole thing.