----- Original Message ----- From: "Rob Studdert"
Subject: Re: Viewfinder registration (WAS: Re: SMCP A 35/2.8 any good?)
On 11 Nov 2004 at 21:42, Tim Sherburne wrote:
Okay, Anthony, I confess! I've been on this list for a good bit, but I've
never heard of anyone mentioning "viewfinder registration" before. Perhaps
my memory is failing me. Please enlighten me!
Focus screen/mirror position adjustment. If the focus screen or mirror or both
are set at the wrong lateral position or aren't parallel to the film plane then
what appears to be in focus through the finder won't be in focus on the film.
To add to this, if the focusing screen is not aligned properly with the film plane, in addition to focus errors, you can also get compositional surprises, where things you thought would be in the picture are not, and things you thought you had cropped out are.
I had a couple of K1000s that were so bad for this that I couldn't use them for copy work.
William Robb
