Focusing screens are installed on the top side of that box you\'re looking into - on the bottom of the pentaprism. All the canon SLRs have focusing screens - what varies however is what kind of screen it is. You can get replacement/different purposed focusing screens for the 1d3 however.
When you buy a new screen it comes with instructions for removing the old screen and installing another.
So, you\'re going to have to look towards the pentaprism to see what screen you have, and even then you probably wont be able to distinguish it by looking at it. Also I\'d give it a clean.
Apr 21, 2010 at 02:13 PM
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