Actually I had a similar experience many years ago. When I still had my Nikon F801s, I discovered the Tamron SP 35-105/2.8 had similar problem. When the body sensor indicated it was in focus, the viewfinder image was slightly blurred. When the viewfinder image was sharp, the sensor indicated it wasn't in focus. Since my other Nikkor AF lenses didn't have this problem, it must be the Tamron lens. I have never figured out what the cause was though. :(
regards, Alan Chan >As much as I would like to encourage you to scrap the Sigma ( bought one >one >time for my wife's Minolta only to have it fall apart 12 months down the >track) I think there may be a mirror alignment problem. The mirror plays an >important part in the viewfinder image as well as providing the target to >the autofocus sensor array. _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
