John makes a very good suggestion. I have used 5X7 sliders with a Packard shutter.
It is the fastest way to shoot 2 LF portraits. One 'trick' is to tell the sitter, get ready I am shooting ONE pic now. Do that, but move the slide quickly pump the Packard air bulb twice and bingo you have captured the usually better facial expression in the second image.
Nothing is faster, in under a second you have 2 images. Works with almost any lighting, strobes, hot lights and window.
Many studio cameras used sliders from 2x3 to 8X10 and few want them now, so they are cheap.
Bookmarks