[LargeFormat] Macro photography and movements

[Jim Brick]

I use back tilt for macro work. With macro work, the movements are much 
more (larger, farther, etc.) than at normal distances. If you try to use 
lens tilt, you quickly run out of image circle. With back tilt (opposite 
direction from lens board tilt) you always remain in the optical center of 
the lens. It works.

Because of my Hasselblad Flexbody, which only has back tilt, I started 
using back tilt on my Technikardan 45s rather than front tilt and have been 
ecstatic about the results. I like the fact that you are always dealing 
with the optical center of your lens rather than the fringes, where 
sharpness tends to decay. With back tilt, you can gain DOF control with 
lenses that have no image circle outside of your film size. Like my 55mm 
f/4.5 Grandagon. Back swings & tilts work fully.

I guess if you have a field camera, this could be tough. I used to own a 
Super Technika field camera that had limited back movements. Actually 
enough for most situations. But at least they were there.

IMHO,

:-)

Jim


At 05:38 PM 1/31/2004 +0000, Mike Finley 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.
>Does nay one know what should happen when using tilt or swing at this
>distance, please?
>
>thanks,
>mike
>
>Mike Finley, http://www.efikim.co.uk
>
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