Re: Refocusing for IR photography - LF

[Ken Sinclair <photo1@xxxxxxxxxxxxxxx>]

Focussing with the front standard also changes the lens/subject distance
and hence magnification ratio. This may not be much in a landscape
somewheres near infinity, but in close-upor macro work would make accurate
magnification work a bit more difficult.
Ken



>George L Smyth <GLSmyth@xxxxxxx>:
>
>> Believe me, it is much easier to move the lens of a LF camera forward
>>than it is to
>> move the film plane back. <g>
>
>Why do you say this?  I use rear focus at least half the time.  For
>close-ups rear focus is much better since minute changes in the lens
>to subject positioning are more likely to adversly affect subject
>overlaps and definitely change the magnification.
>
>On any monorail and field camera that I can think of it is equally
>easy to use either standard for focus.
>Sandor Mathe  -- sandor.mathe@xxxxxxxx
>(905) 670-1225 x333  --  FAX (905) 670-1344
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