rNeil H wrote:I donknow much about the Takumars.
They are from Asahi Pentax, another respected Japanese brand. I like them a lot for portraits (but not only that). The look is similar to Minolta Rokkors in the same range. Relatively warm and softer than modern glass, but quite nice on digital. Older ones come in M42, later Pentax changed the mount. They are easily adapted to EOS with a thin ring.
The older "Super-Takumar" versions flare a bit more, but in a nice way. Later there were SMC-Takumars, which had some of the best coatings of the time. Mine are not fast, with 28mm f3.5, 35mm f3.5, and 55mm f1.8. The 55 has a really long focus throw, over 180 degrees, the wides somewhat less. All still perfectly smooth after all those years.
If you are looking for a zoom, I got a Hoya 35-105mm f3.5, which was sold with different mounts and by Vivitar too (probably built by Tokina).
I have it in C/Y, which again can be adapted with a thin ring. Mine is even parfocal, but I wouldn't expect that in all cases. A heavy piece of glass, built like a tank and both focus and zoom are still perfectly smooth. Even offers macro capabilities. This is an example by Vivitar:
Finally, there's the Canon 35-105mm FD zoom. It can't be adapted to EOS, but to Nikon mount. I use it on E-mount and like it. Also quite attractive for video, being pretty much parfocal, constant f3.5 aperture and two-touch, but built with more plastic:
All of these are full-frame.
The front ring of both zooms is turning when focusing, so you'll need a matte box for filters like polarizers.