Even better, defocus the lens and concentrate on lines on the screen.
Are they sharp & in focus? What is the most comfortable correction?
You could also try out the various reading glasses in the pharmacy.
They come from 1 to 3.5 dioptres by .5.
PS - 1 dioptre is 1 metre focal length, 2 is 50 cm, 3 is 33.3333 cm,
etc.
Tom
On 23 Nov 99, at 15:51, Giles spoke about "Re: [OM] Dioptric Correction?,"
saying
>
> The viewfinder image is at infinity focus, that is, it should be in
> focus when your eyes are focused on infinity.
>
> So, to find out whether a dioptre correction lens will help - and which
> one - try looking through some in a camera store at a distant scene
> starting with a -1 then a -2 etc. If looking through one improves your
> view of the scene then you know it is the right one and that you need
> glasses like the rest of us ;-)
>
> Now it might be a bit hard to find a store that carries a range of
> Olympus accessories 8-( but certain Nikon ones should fit and be much
> easier to find.
>
> Dioptre correction lenses for Nikons with rectangular eyepieces should fit
> - rather tightly but they do fit. Some models with the right sort of
> eyepiece are the Nikon FG, FA and N6006.
>
> Giles
>
>
> Jim Mueller wrote:
>
> > >dioptric corrector or not. How can I tell if I need dioptric corection
> > >at the view finder and how much? Some of my photos are sharply in focus
> >
>
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