On 30 Dec 2005 at 17:52, Igor Roshchin wrote: > So, my point is that this comparison is consistent with the > Pentax lens being focused at a point that is slightly farther away.
I'm pretty sure it's the same plane of focus, the OOF areas were rendered completely differently in any image that I made for comparision. > On a different subject, - I am somewhat surprised by the difference > in the brightness of the images at almost all appertures. > At 2.5 the Pentax image is brighter, but it becomes darker at smaller > apertures. > I assume you were using exactly the same exposure time for both lenses. > (well, was it a partially cloudy day? :-) ) The shots were made moments apart in the same light, the aperture and was set from the body and the body was set in manual mode. I expect that there would have been better uniformity between the shots had I used the aperture control on the lenses. Test shots using aperture control from the body will often display similar inconsistencies on my *ist D. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
