Originally posted by jstevewhite Yeah, you can find an m42-to-anything adapter, just about. But what about K-mount glass?
I'm struck by your assertion that $1100 is a small price to pay for tiny differences in edge case performance. I get your comment about system - Nikon and Canon do have much 'deeper' systems - but what performance are you talking about on the D700?
You can't use M42 glass on Nikon unless you want to perform surgery on the lens to get infinity focus. I know they make adapters with glass inside them, but those are inferior.
Is there a specific piece of K glass that you feel is clearly superior to Canon, Nikon, or anyone else's glass? The only lens that sticks in my mind is Canon's 85/1.2 on FF. In all fairness I haven't used the LTD primes though.
$1100
to me seems a small price to pay for full-frame, class leading AF, high ISO performance, TTL flash consistency, ability to control multiple strobes. There are also technical benefits to FF, such as finer DOF control and higher DR. But then again, I think camera bodies are relatively cheap today. Do you remember when the Canon 10D sold for $1495? I thought that was a great price in 2003.
Don't get me wrong, I like my Pentax stuff. I make excellent 8x12's and good 12x18's with my K20D + Tamron 28-75/2.8, which set me back all of $850 new. The K20D has great bang for the buck, especially when I purchased it last year. But if we're talking about the OP's topic (K7), I stand by my original assertions (which you didn't dispute).