02-19-2016, 02:40 PM
Quote:Guess you can only check this on the spot and see if the level of vignetting is tolerable for you. Then again, maybe a Sigma 50/1.4 (non-A) is a better all around option, and surely it's a lot cheaper (the Pentax 55 was always on the expensive side). As far as I can remember, the Sigma was available in the K mount.Well, for me Pentax is all about weather sealing: I often walk/cycle under rain/snow for hours, and just hate having to constantly cover the camera/lens with something (or having to put it in and out of the bag every time there's a photographic opportunity). There's not that many weather-sealed normal fast primes out there. That's why I am (was?) interested in the 55/1.4. Non-sealed K-mount lenses are of no interest for me, otherwise I'd go with something a lot cheaper (like the Sigma you suggested).