Quote:
Originally Posted by lxlim
yes. about 2-3000 times in the last 6 weeks. It was a tripod job. By moving my eyes further away from the viewfinder the focusing patch fills the viewfinder making it easier to nail my focus exactly. Same as using the magnifier at waist level on a Twin lens reflex or a reversed loupe from the back of a 4x5 with groundglass removed. Basically a spot magnification of the point of critical focus. Not with a magnifier so far as I have not purchased it yet. I will give it a try with the magnifier.
With the viewfinder, I have 90% keepers at f2.8 1/30 at ISO640. with the MegaPerls 1.35X, I have 40% keepers. With the 1.25X (tested in the shop) I got 0%
I might be fitting it wrongly but so far I was unable to find out where it could go wrong. None of the sales guys could tell me where I am going wrong in fitting it, they could not focus on it either.
Actually it is three guys and three magnifiers who are unable to focus with it and one guy who could focus accurately did not have fully corrected vision which makes me inclined towards shootist's explanation that the M8's rangefinder having a -0.5 diopter correction built-in. That guy could not focus with the viewfinder alone accurately. That would account for me seeing a slightly out of focus viewfinder.
Thanks.
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It is not the sharpness of your eyes,which is the thing that your optometrist tests, it is a thing called vernier acuity that is at the basis of RF focussing. (Not that that is wholly dissociated from sharpness and astigmatism.)If that is off a little the error may be magnified - by the magnifier
And yes, the magnifier changes the strength of the viewfinder ocular by 0.5 dioptre. It could just "push you over the edge of unsharpness"
In other words: it aint that simple....