Not a scratch or puncture, it wasn't there 100% of the time but it tended to stay persistent for many shots in a row, I'll try cleaning it later when I have the appropriate tools but I think its a sensor problem. There was some debris on the the mirror from packaging it looks like even though it came with the body cover on it, so cleaning might be worth it.
I bought it used and its not really returnable in this case, I guess I expected some defects of this sort, and the internal software seems to have acceptably sorted it out, If I only gave you the second pic and said find the defect you'd be 5 minutes scrolling over it zoomed to figure out what I was talking about if you even saw it at all. Its really only even visible against something like a blue sky or other very uniform well lit surface. I can PP it if its a problem in a good pic.
Honestly even with all the really good high photo count units running around out there I have very low expectations for DSLR sensors, they just seem a flaky sensitive technology.
EDIT: not an isolated incident :
http://www.talkphotography.co.uk/forums/showthread.php?t=353096
luckily I don't really care as much about the line as he did, like I said, low expectations.
2nd Edit: After reviewing photos I have decided this tiny almost unnoticeable black line will be my hidden digital watermark for every photo I take in the future with this camera.
Last edited by PPPPPP42; 02-01-2012 at 03:44 PM.