Since a couple of months, I'm using a Pentax Takumar 35/3,5 and a Carl Zeiss Sonnar 135/3,5 lens on my 30D. And I love them

Now another one is on its way to me, a (suppposedly) "near mint" Pentax SMC Takumar 200mm f/4. In M42 mount, so I can easily use it on my Canon EOS, with the AF-confirm adapter.

If the quality is comparable to the Sonnar 135, I am a very happy person

Pictures should come up in about a week ... I don't expect to have it before the weekend.

Edit: it arrived My first impression is that I rate the Sonnar 135 a bit higher, but that it is a very nice lens!