Braun universal sucher - for leica M6

Hi,

I would like to get some good external viewfinder for my Leica M6. I am using Leica with summicron 50mm only, and build in viewfinder is very frustrating (showing about only 85% of frame on infinity).

Any opinion about this viewfinder (is it good?):

http://allegro.pl/celownik-uniwersalny-braun-i1514427770.html

Maybe some other recommendation? What I would like from viewfinder is that is shows precise full frame - most similar to nikon F3 possible

thanks

I played with one for a short time (while seeing what Bran Paxettes were capable of).
I *seriously* doubt you'll find it better than the M6's viewfinder (IIRC the Braun doesn't enlarge, it just has adjustable masks).

FYI: I just compared a reasonably good external optical viewfinder (a Soviet copy of the Zeiss multifocal finder): the 50mm field is still visually smaller than the M6's 50mm frame.