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					Originally Posted by kennygee
					
				 
				Adey 
 
Its an interesting point you raise about the impact of the viewfinder in magnification issues. I must admit I'd never considered it. 
			
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 Most DSLRs with a 'cropfactor' seem to have smaller viewfinders than full frame models but I've got a Canon EOS50E film camera plus Olympus OM1 which are both 35mm full-frame cameras but the OM1's viewfinder image is noticeably bigger (and brighter). 
Incidentally, if you've got something like the OM1 which has a range of interchangeable focus screens you can fit a 'clear' type and see just how bright your lenses really are - it comes as quite a shock to see how much light the normal screens soak up in order to give you a focussed image across the frame (you have to use the microprism in the middle of the clear screen to accurately determine correct focus).