This makes me want to take pics of a 1970s car with 1974 camera, although these are much older, cool stuff. When you get pics, make sure to get the film scanned on a high res scanner and post them up here! I want to see what she can do! (they might be a little um.... not so light proof, and have exposing problems, and the shutter may stick or the aperture blades not quite all work, etc. so expect to go through a lot of rolls of film getting the technique just right) If you have a DSLR, or a high end point and shoot camera, I suggest you use them as a light meter, as there is no good affordable "light meter only" light meter on the market anymore because of all cameras having them built in. So what you'd do, is take your modern digital camera, and hold the shutter halway, or just take the picture. then go into "info" on the screen, and look at the ISO, shutter speed, and aperture of the shot. Do a little math of F/Stops (move up one stop in ISO, you'll have to move either the aperture or shutter speed down one stop, or each 1/2 stop, etc.) then you'll know how the photos will come out with the same settings on the film cameras based on the ISO of 620 film you're using. Hope this helps.