Hmm I recently noticed this faint circular mark when I look through my 40D.
It is this faint black lining that forms a perfect circle around the focus points. It is not the spot-meter circle.
It doesn't show up on the pictures I take so it's probably not on the censor. I have removed the eye cup and wiped the view finder but the marks remain. I have tried on different lenses and the mark is still there, so it's not from the lenses either.
So I am wondering what the circular mark might be... does any one know? Is it the matt screen?
It's bugging me quite a bit so any help would be appreciated. Bolded the words to emphasize that it's not the spot-meter circle.
o - spot metering circle, ( ) - the faint circle shaped mark.
( o )
Ok someone provided the view finder picture. The mark looks something like the oval line except it is not that thick and obvious, I made it so to show that it is not the spot meter circle.