marke Posted October 24, 2008 Share #1 Posted October 24, 2008 Advertisement (gone after registration) I've often wondered, why does Leica use a negative diopter correction on their Ms from the factory? Not that I could ever use any of the aftermarket corrective lenses myself, since my eyes are SOOOOO bad already, but I've always been curious about their decision on this. Wouldn't it make more sense to start at a zero correction? Somone, please correct my blurred understanding on this subject! Link to post Share on other sites More sharing options...
Advertisement Posted October 24, 2008 Posted October 24, 2008 Hi marke, Take a look here Why a negative diopter correction on Ms?. I'm sure you'll find what you were looking for!
Kent10D Posted October 24, 2008 Share #2 Posted October 24, 2008 My understanding is no less blurred than yours on this one, but I can add that the "standard" diopter on a Hassy prism finder is -1. So it must be the thing to do ... I guess. Link to post Share on other sites More sharing options...
kodaktrix Posted October 24, 2008 Share #3 Posted October 24, 2008 Several years ago I read a statement from Nikon (-1,0 correction) that said, that younger eyes do not need it, but can easily handle that, and it would serve older eyes, as you get more far sighted then. Regards Oliver Link to post Share on other sites More sharing options...
marke Posted October 25, 2008 Author Share #4 Posted October 25, 2008 Several years ago I read a statement from Nikon (-1,0 correction) that said, that younger eyes do not need it, but can easily handle that, and it would serve older eyes, as you get more far sighted then. Regards Oliver Thanks, but I'm 50 and extremely far-sighted since age 7! I just think they should start at 0 (zero) correction. Link to post Share on other sites More sharing options...
andybarton Posted October 25, 2008 Share #5 Posted October 25, 2008 The dioptre correction is appropriate for the vast majority as a starting point Given that in 1953 they could do a variable dioptre finder, it makes sense that anyone outside the norm who needs something special, buy the correct adjustment finder lens. Link to post Share on other sites More sharing options...
marke Posted October 25, 2008 Author Share #6 Posted October 25, 2008 I meant to write NEAR-sighted! Thanks, but I'm 50 and extremely far-sighted since age 7! I just think they should start at 0 (zero) correction. Andy, I'm curious as to how how they (whoever they was) arrived at this "norm". Do you think that the common shooting distance of the day played into this decision? If most photographers are 50 or older, and shoot close portraits, I could understand this. Otherwise, how would this be determined? Sorry to be so difficult. Just very curious. Link to post Share on other sites More sharing options...
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