Originally posted by geekette I have the K mount version of this lens: Pentax K 55/f1.8
I see a lot of people recommending this lens in M42 and not K. Is there a reason for this? Is there a difference in quality or IQ? Perhaps single coating versus MC? My K is MC.
I would guess that the reason is that there are probably a lot more Tak 55s out there than K 55s, so there will be a lot more Tak users than K users. I doubt there's any difference at all, optically - particularly as you have the S-M-C version. So don't fret!