[Leica] Correction lenses for R8/R9 viewfinder

[dennis at hale-pohaku.com (Dennis Painter)]

Hi Martin,

I believe you are correct. Diopter values are additive. As a correction lens 
for
the R8/R9 is likely quite expensive your optometrist / ophthalmologist 
should be
able to place a lens between your eye and the finder to determine a diopter
value that works best for you.

I don't know what 0 on the R8/R9 is but on many camera finders with no built 
in
correction they are actually about -1 diopter. Best way to determine 
correction
is to try it on the camera.

Dennis

Martin Krieger wrote:

> Supposedly the viewfinder adjusts from +2 diopters to -2 diopters. If I put
> a +1 correction lens on it, will it then go from +3 diopters to -1 
> diopters.
> I am nearsighted, and the current range (+2 to -2) is not quite enough for
> me to see clearly without my glasses.
>
> Also, if someone has a suitable correction lens they want to sell, do let 
> me
> know. Thank you,
> Martin Krieger
> krieger@usc.edu