Re: SMC PENTAX-F 24-50mm F4 lens field test - more files

2018-08-19 Thread J.C. O'Connell
Ive looked up a few reviews of this lens and some complain of the lens having flare problems, but upon examination of all my samples, I dont see any obvious or even subtle veiling flare in the results. The optical design plus the SMC coatings seem to be in control of flare. I did not use a h

Re: SMC PENTAX-F 24-50mm F4 lens field test - more files

2018-08-19 Thread J.C. O'Connell
thanks, I never would have guessed they upped the number of aperture blades in the F version. jco On Sat, 18 Aug 2018 23:36:03 -0400, John wrote: This is what the K-Mount page says about them: Min FilterLens LensElementsFoc

Re: SMC PENTAX-F 24-50mm F4 lens field test - more files

2018-08-18 Thread John
This is what the K-Mount page says about them: Min FilterLens LensElementsFocus Diameter Diameter Weight /Groups Distance (m) (mm) X Length (mm) (g) M 24-50/4 12-10 0.4

Re: SMC PENTAX-F 24-50mm F4 lens field test - more files

2018-08-18 Thread J.C. O'Connell
I developed a few more new RAW files today and added them to the page. same link as below. Does anybody know if the F version of the lens is the same optically as the A and M versions? jco On Fri, 17 Aug 2018 17:41:32 -0400, J.C. O'Connell wrote: I bought a cheap general purpose af le