The scratch right below the reflecting mirror on D600.

Started Oct 27, 2012 | Discussions thread
Timbukto Veteran Member • Posts: 4,988
Re: The scratch right below the reflecting mirror on D600.

That is the focusing screen.  Usually focusing screens have to be fitted rather precisely, sometimes they come with one or two shims to make sure it fits perfect.  The reason is its the plane of focus that the lens projects its image onto for which you end up viewing it through the viewfinder after it is projected onto the pentaprism, etc.

Another issue about gaps in the focusing screen would be getting dust into your VF which is annoying.

Speaking of which are D600 focusing screens user replaceable?  Even Canon lately has made recent models with non-user replaceable focusing screens (which typically just means harder to replace more than anything).

 Timbukto's gear list:Timbukto's gear list
Canon EOS M Canon EF 200mm f/2.8L II USM Canon EF-M 22mm f/2 STM
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