Bernd: <Sorry, this is a bit OT, but I´ve been looking for a virtual
centerfilter for Photoshop to compensate wide angle lens problems - didn´t
find any.>
Try Helmut Dersch's freeware Photoshop plug-in "Panorama Tools" at:
http://home.no.net/dmaurer/%7Edersch/Index.htm
I've used it to good effect to eliminate barrel distortion.
Harald Johnson
author, "Mastering Digital Printing"
DP&I.com ( http://www.dpandi.com )