[LRflex] Re: physiological optics- query
- From: Thomas Schofield <tdschofield@xxxxxxxxx>
- To: leicareflex@xxxxxxxxxxxxx
- Date: Fri, 12 May 2006 13:48:59 -0700 (PDT)
Most SLR viewfinders put the focusing screening,
optically speaking, about one meter or so from your
eye. Which ever part of the tri-focal is best at that
distance should work. But, why not just try each and
see which you prefer?
Tom Schofield
--- John Scocca <john@xxxxxxxxxx> wrote:
> List members:
>
> The question is: what portion of a trifocal
> spectacle lens should one
> look through when focusing a SLR lens? With a
> rangefinder, one
> looks at the subject in the far field, and my specs
> have the
> scratches to prove it. but the SLR seems to be a
> problem. I am
> consistently missing the critical focus point, and I
> fear it is from
> my deteriorating vision.
>
> someone in this group must have the info. many
> thanks in advance
>
> John Scocca
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