Depending on who you ask, infinity for a lens could be anywhere from 600
to 900 times the focal length. 50mm = 98', 100mm = 196', 200mm = 392'
and so on (and those values are at the 600X value).
John
Camtech
Frank van Lindert wrote:
>
> On Mon, 08 Mar 1999 05:49:01 -0800, William Sommerwerck
> <williams@xxxxxxxxxx> wrote:
>
> >The diopter setting has no effect on how the lens focuses on a matte screen
> >or
> >split-image/microprism screen.
>
> True, but the eye cannot see if the picture object is in-focus when
> the diopter setting is far off.
>
> I have an auto-focus digital camera (D-600) with matte screen (no
> further focusing aids needed, of course) and without diopter
> correction setting.
>
> During camera focusing I can always see a sharp matte image for a
> short but passing moment, because the camera thinks differently and
> focuses further, ending up in a position that seems out-of-focus to my
> eye.
> The camera is always right, and I am always wrong...
>
> Frank.
>
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