Tokina AF 35-70mm on K-5

2011-04-20 Thread Roman Melihhov
I got my Tokina 35-70mm f/3.5-4.5 today from eBay and it's seem to be quite nice lens, despite of its enormous barrel distortion at 35mm I like the way it handles light and very little, close to no TCA, absolutely no vignetting. I'd noticed one thing. K-5 thinks it is PENTAX-F 35-70mm f3.5-4.5

Re: Tokina AF 35-70mm on K-5

2011-04-20 Thread Matthew Hunt
On Wed, Apr 20, 2011 at 3:07 PM, Roman Melihhov ro...@blakout.net wrote: I got my Tokina 35-70mm f/3.5-4.5 today... I'd noticed one thing. K-5 thinks it is PENTAX-F 35-70mm f3.5-4.5 lens. How are you determining this (i.e. with what software)? I ask because Pentax does not include a textual

Re: Tokina AF 35-70mm on K-5

2011-04-20 Thread Thibouille
Very simple: Tokina 'hacked' the Pentax 35-70 code and used it. Sigma does/did the same btw, my 28/1.8 being identified as a Pentax 28/2.8 (funny as I shoot @1.8). The lens ID is given by the lens to the body. The K5 will NOT itself apply any lens correction because the K5 can do so only for DA