I have a smc pentax k 28mm F3.5 that is razor sharp with no CA from corner to corner on aps-c digital so its not the wide, its the lens.
----------------- J.C.O'Connell hifis...@gate.net ----------------- -----Original Message----- From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of Zos Xavius Sent: Wednesday, March 13, 2013 6:38 PM To: Pentax-Discuss Mail List Subject: Re: K-5 and over exposure? Older wide angles are generally not corrected well for digital. Heck even the 12-24 is a CA prone lens, though it is easily correctable. WA is tough on digital due to the angles. My tamron 28mm had bad aberations on the borders. On full frame it would likely be a disaster. Peter McIntosh <peter...@gmail.com> wrote: >I've got an old Vivitar 24mm prime that over-exposes on my K5 - I >usually set compensation to -1 stop when I use this. Which is rarely >because the CA with this lens is awful... > >Haven't had it with any of my other lenses - 18-135 zoom, A 28mm >f/2.8, A 50mm f/2.0, Sigma 70-200 f/2.8 HSM. > >Ciao, > >Pete Mac in Melbourne > > > >On 14 March 2013 08:30, Zos Xavius <zosxav...@gmail.com> wrote: >> Is anyone finding that their k-5 leans towards over exposure? I >often have to use -.7 to -1 ev compensation. I find this consistent >across old glass. With the kit lens and thr 12-24 it seems to do a bit >better, but still overexposes at times. I generally use matrix >metering. Even in well lit scenes in daylight. Sometimes with the same >glass it works fine at , but I'm forced to chimp constantly to look for >overexposure. Also the meter seems to jump around on the same scene. I >tried some shots between my k-7 and it was matching settings, so I >can't decide it my meter is working properly. There is generally a >1ev difference if I compare to live view with live view giving >the correct/better exposure reading. Any thoughts from you guys? I >bought this k-5 six months ago and I don't remember making -.7 the >norm on my k-7. I usually only had to add negative compensation at >night on that camera.... >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above >and follow the directions. https://www.facebook.com/zosxaviusphotography -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
