I am just now moving to LF. I use Bowens 500W monolights in the studio for portrait, fashion and small product work. They work great shooting a full frame DSLR, shot a f/8 with a 200 iso equivalent. Will they be enough for a 4x5 shot a f/22 on 100 iso film, or do I need to go to a 1000W or 1500W monolight? I'm choosing f/22, because from what I've read, most LF 150mm to 300mm lenses have an optimum aperture range from f/16 to f/32. The lenses I use for my Nikon D700 have an optimum aperture or around f/5.6 to f/11. I'll do some experimenting, once I get my camera, but was wondering what others do.
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