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P&S digicam issues - Presbyopia


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#1 derway

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Posted 27 January 2002 - 03:43 PM

One big issue is having to use the LCD for all functions, (since the tiny little viewfinders are no use in a housing).

So, a bright, clear, LCD, which is viewable under all lighting conditions is important.

A big problem, for me, at age 44, is having to focus close up. It wasn't a problem with my housed film SLR, since the make the apparent image in the viewfinder out far enough, but using the LCD, it was a big problem.

I tried the removable bi-focal gizmos, but they seemed to just fog up instantly.

Undercorrecting my mask, using -1.5 instead of the usual -2, for distance seemed to help some.

Anyone else have good solutions?

Don
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#2 davephdv

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Posted 31 January 2002 - 07:13 PM

You have already hit on the answer. You have to reduce the amount of myopic (minus) correction (or increase a hyperopic) in the eye your looking through the viewfinder with. I usually recomend being fit with daily disposable contact lenses for diving rather than a bulit in lens as the contacts won't fog. I am older than you and use an acuvue bilfocal contact lens in one eye. But the lens dosen't work for a lot of people. You don't have a problem yet with a SLR as most SLR viewfinders are set at a focus of -0.75 diopters. Most people won't have a problem with this to around the age of 50.
Dave Burroughs, Nikon D300, D2X, Subal housing, DS160 strobes

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