Should be the dull grey side out, just checked a negative and I did give good advice. Really had to check as I haven't shot sheet film in a while. So it is lower left or upper right.I hope I didn't put the sheet film in the wrong side. I think my notches were on the lower right when I shot my two sheets. :-/ So the glossy purple side facing out? Or the matte grey side facing out? I put it in the way previous owner put it (I found two sheets of film already loaded and without knowing that, oops, those two film were exposed to the light when I open the dark slides).One thing that hasn't been mentioned is when loading film in holders the notches on the film should go either to the lower left, or upper right in the holder. Another one of those "who taught you" conventions, this is to be sure the emulsion is facing out. My father had a 4x5 Speed Graphic he gave to me when he thought I was getting serious about photography. The cameras are big but they are light weight and not hard at all to use. There are 2 pin to pc connectors available, see if your shutter has a M and X switch. If the shutter has a piston flash adapter, I am not sure it can be used for a strobe.
I am unlikely to bother with flash, as I am TERRIBLE even with modern flashes. I do use flash, but I have no idea what I am doing sometimes. LOL
I have 2 or 3 2 1/4 x 3 1/4 sheet film holders if you want them PM me. I'd let them go for shipping costs.

