On 15 Nov 2004 at 20:01, Jens Bladt wrote: > Shel and Rob: I believe the Pentax SMC M 2.8 35mm is doing well, compared to > the > zoom lenses.
I appreciate your effort but your results don't actually surprise me, I hope the M28/2.8 would be better than the zoom. I like like your test compilation however if you also presented sections towards the edges of the frame I believe that it would prove a lot more useful and revealing. On your full frame image see the edge of the white fence to the left, there is significant CA even though it was shot at f8. This is often the type of thing that differentiates a good lens from a great one, a case in point being the FA24/2. It is razor sharp dead centre but it performs far worse than most other Pentax 24mm primes towards the edges at any aperture. A centre section wouldn't reveal this significant performance issue. To see just how badly CA can affect certain types of images check out the hideous sample image on the following Sigma page shot using a Sigma 18-50mm F3.5-5.6 DC at f9: http://www.sigma-photo.co.jp/sd10/english/photographer/miyake.htm Cheers, 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
