Roll Film Holders on Crown Graphic

[Michael Graves]

I realize that for many, this will fall under the category of Stupid Questions...but I gotta ask, or I'll never know.

I just bought a Crown Graphic and it came with a 120 roll film holder. I've used Graflock backs before, so changing backs isn't an issue but.....

How do you compose the shot? Do I have to compose on the ground glass and swap backs every time? Or is there an easier way?

[Chris Pandino]

Michael,
You can either mark off the GG where the roll film holder aperture lies, or use the coupled rangefinder to focus and the viewfinder (with appropriate mask) to compose. Graflex.org has mask numbers for different film formats on the site somewhere.