Can anyone suggest starting points for developer times/iso for using 4x5 Technic al pan in landscape and natural light portraiture? I have used it for extreme e xpansion--times when the meter needles barely moves - and have excellent results when using it in TmaxRS, Fg7 or even D-76. But my attempts at using the ilm und er N or N+/- 1/2 situations have crashed and burned. I like the clarity of the n egs but have yet to master using the film in any but extreme circumstances.
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