5D Mark II Focus Screens

So I was reading a post about getting dust out of your viewfinder (mine got some small hairs) and the op mentioned his mistake of scratching the filter and I laughed because I knew how careful you have to be when handling the focus screens....or so I thought. Right as I was handling my focus screen after blowing out the camera I slipped and my nail scratched it.

So then I get the bright idea that maybe I didn't scratch it but just got some nail residue on it and proceeded to wipe it off with a lens cloth and it smears the whole thing.....

So now I have my 5D II and an unusable focus screen with no spares and I remember...I still have my old 5D focus screens. I get them out and alas they don't fit. I take a closer look as to why and it appears the only difference between the 5D and 5D II screens is two small tabs on the left and right side. So I cut the tabs off carefully with scissors and I now have a 5D focus screen in my 5D II to use until I get another one. It looks like they designed them purposely to be incompatible even though they are almost identical.

Just thought I would share my experience. Watch those finger nails.

Have you noticed any difference in the lightness or darkness of the view finder with the 5D screen. I know that Canon has said that even the Eg-S screen for the 5D2 can appear darker when using lenses slower than f2.8.

dfek wrote in post #7284643
Have you noticed any difference in the lightness or darkness of the view finder with the 5D screen. I know that Canon has said that even the Eg-S screen for the 5D2 can appear darker when using lenses slower than f2.8.

I just got the S screen and I have a 16-35 2.8L II and I thought the viewfinder looked darker than my friend's 50D. I was wondering what it was. Now I know.