Strobes, Lighting, Metering, and Digital 'Polaroids'

[joelio]

I use any trick I can think of

I shoot primarily in my studio with lamps and/or strobes

I match my DSLR lens focal length to my LF FL for same field of view

Then shoot a DSLR test as close as possible to the LF taking lens ........very close

but never forget to add a LF bellows factor to your DSLR numbers

and most DSLR don't have f64

and no DSLR will exactly match LF depth of view aka focus aka field except sometimes

as my Darkroom is next to studio, sometimes I have ready to use trays with chems for very fast tests full size

X-Ray is good for that

Too

I have found a new use for a neglected DSLR macro lens - digital proofing in the fashion that you described. And while it won't get down to f64, it gets to f32 - more than handy enough after adding a filter and factoring in bellows extension for any close up work.