[LargeFormat] Macro photography and movements

[Mike Finley]

On Sat, 31 Jan 2004 11:45:53 -0800, "Paul Butzi" <photo@butzi.net>
wrote:

>> I've just been trying to do some macro photography at about a 1:1
>> ratio, and had trouble using tilt to control the plane of focus. Now
>> that I've given up for today, its occurred to me that at this
>> magnification tilt and swing may not behave as expected, as small
>> changes in lens distance change magnification rather than point of
>> focus for a 'conventional' camera.
>
>All changes in lens-to-film distance change the point of focus and
>'magnification' for both conventional and view cameras.
>
>> Does nay one know what should happen when using tilt or swing at this
>> distance, please?
>
>Tilt and swing will work exactly as you expect regardless of the focus
>distance/magnification.
>
>-Paul
>
However, at 1:1 magnification the point of focus to film distance is
at a minimum for conventional cameras. Whether you increase or
decrease .or the lens to film distance, the focus point moves further
away from the film. Its this that makes me wonder what happens on a
large format camera.

mike
Mike Finley, http://www.efikim.co.uk