Adding to the heap. My N90s with the MF-26 back has the coating missing in a small patch on the MF-26. It does not seem to be growing, so I have done nothing about it. Seems to me there was a thread a long time ago about this. I "think" I read that Nikon would replace the MF-26 back if it was still in warrenty. Don't know about the N90s (unless it was just the back). Troup Nightingale - Brunswick, GA USA CameraLinks Photography http://www.angelfire.com/ga/cameralinks Netword = CameraLinks _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.com