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Re: [OM] Optics 102: Aging, Apparent Focusing Distance reference, et. al

Subject: Re: [OM] Optics 102: Aging, Apparent Focusing Distance reference, et. al.
From: DaEyeGuy@xxxxxxx
Date: Tue, 22 May 2001 13:15:25 EDT
In a message dated 5/21/01 8:41:36 PM Eastern Daylight Time, 
norcutt@xxxxxxxxxxxxx writes:

> Reading the FAQ about the diopter
>  numbers on the viewfinder corrective lenses I conclude that the
>  viewfinder is set for -2 diopters without correction.  Does this mean
>  that the apparent distance to the screen is 1/2 meter?  Seems too
>  short.  What have I got wrong?

How did you come up with the correlation of a -2 diopter correction equals 
1/2 meter distance?
Susan

Susan Steele
Virginia USA

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