What diopter eyepeice do I need?

[ericjhall]

Hello all,

 

I recently went to have my eyes checked and was told that my right eye has a

-1.0 diopter. I was wanting to get a diopter eyepeice for my Nikon FE2.

However, I heard there was some discrepancy between this number and the diopter

numbers used by Nikon. Is this true? I don't really want to order anything

until I'm sure of what I need. Thanks to all in advance!

 

Regards,

 

Eric

[curt wiler]

This subject has caused a good deal of confusion over the years. The best reference can be found in the Nikon Store:

http://www.nikonmall.com/category.asp?search_id=95

[leonard_evens]

The previous answer gave a link explaining it. But the net result is that if your eye doctor told you you need a -1.0 (negative 1) correction because you are slightly near sighted, then that is the correction you would need to put on the eyepeice. The eyepiece is designed, in principle, so that someone with normal vision will end up focusing on the focusing screen in the SLR. If you need a -1 diopter lens to correct your vision to normal vision, then that is what you need whether it is in the form of an eyeglass lens you wear or one you put on the eyepiece. Of course, if you end up wearing glasses, you wouldn't want to use them together with a diopter correction on the eyepiece.

 

Similarly if you were far sighted, you would need a plus diopter correction, the same in either case.

 

By the way, my Nikon DSLR comes with a built in diopter correction which spans the range for most people who need corrective lenses.