I've long been wondering why a huge amount of my pictures are off-focus. I thought I'm doing something wrong when focusing (focus spot off-target, AF finding something that I've not noticed etc). After I found this forum couple of days ago I realized that maybe my K10D is back-focusing.
I took couple of test pictures. These are center crops - the original ones includes the whole paper. First with
Sigma 100-300 mm f/4 which I just bought. This one is - I think - just perfect.
The next one is taken with
Pentax DA* 50-135 mm f/2.8 which I've mainly been using. I think the focus is 20-30 mm too far. I took several pictures with this lens and this is the best one. How this will affect focusing when the distance is e.g. 20 meters or something?
Focus was OK also with Pentax DA 16-45 mm f/4.
Is there any cure for this? For just this Pentax DA* 50-135 mm lens so that nothing would change with other lenses?
Last edited by Nuutti; 06-25-2008 at 02:44 PM.