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 forgot to mention that the image was focussed dead centre on one of the nail heads in the fence, it wouldn't surprise me at all that the focus across the frame differed, one lens is of course fully flat field corrected, the other suffers from pretty extreme spherical distortion. I used to use my A135/1.8 to shoot concerts but found practically that the Voigt wide open with the camera ISO set a stop faster provided far superior image quality to the A135/1.8 at 1.8 or 2.8, they weren't really on par until about f5.6. 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
