Re: [Leica] M's and focusing

[Jim Brick <jim@brick.org>]

Get an R camera and plain ground glass screen. Put the person where you
want them, THEN focus, and photograph. Move nothing. What you see is what
you get.

Jim


At 01:49 AM 4/20/98 -0400, you wrote:
>An open question regarding M's and lenses with good flatness of
field--suppose
>I'm shooting wide-open with a wide angle lens and my subject is, say, a
person
>who's pretty close, and I want the eyes to be sharp. I focus on the person's
>eyes in the center of the finder, but that's not what I want in composition,
>so I move that person close to the edge of the frame. Technically, it
seems to
>me that if the field-plane is truly flat, that will back-focus the eyes of
the
>person when I change the composition.
>	Please bear with this ludicrous example of why I flunked math;
>I cut out a triangle, representing the field of view of a wide-angle lens,
and
>kept one point pinned to its place. The center of the opposing side was where
>I imaginarily focused on a subject, that side being the focal plane. When I
>shift the triangle it covers the point of focus and seems to prove that it
>would backfocus on sensitive, precise wide-aperture focusing.
>I'm still trying to decide between R's and M's. 
>Am I full of it? somebody let me know. Thanks...
>