D800 changing focus screen

Started Mar 3, 2012 | Discussions thread
Senior MemberPosts: 5,109Gear list
Re: D800 changing focus screen
In reply to Robin Casady, May 15, 2012

Robin Casady wrote:

I really don't know what you are saying. If you look through the viewfinder with an f/1.4 lens, you are going to be seeing it at f/1.4. If you want to preview the DOF, you can press the DOF preview button and it will stop the lens down to whatever f/stop you have it set to. Going back to the Nikkormat and Nikon F, this has been a standard feature of Nikon cameras.

Old (ground glass) focusing screens like you find in the Nikon F2 showed the proper DOF for any f stop - and since focusing is normally done with the lens wide open you see the narrowest depth of field.

The bright plastic screens used in later SLRS and modern DSLRS are etched with tiny prisims - this makes the screens appear brighter at when the lens is stopped down or with slower lenses - but the tiny prisims apparently change their optical properties so you don't see true depth of field at wide apertures.

 CFynn's gear list:CFynn's gear list
Fujifilm X10 Nikon D800E Nikon AF Nikkor 50mm f/1.4D Nikon AF Nikkor 105mm f/2D DC Nikon AF Nikkor 180mm f/2.8D ED-IF +14 more
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