I am a film student interested in shooting on 16mm for the first time. I recently inherited what I believe is a Bolex H16 Supreme. Since this is a Non-Reflex model, it doesn't have the built-in eye level focuser, and it didn't come with an attachable one either. I only have the viewfinder that attaches to the side of the camera door. I have no way of seeing what the actual filming lens is capturing unless I put my eye right up against the circle that is intended to connect to the eye level focuser, and it is very difficult to see this way.
I could only find one person selling an eye level focuser on Ebay and I can't afford to buy it. So, my question is, is there any way to figure out how to focus on this camera by only using the viewfinder on the side door? I am also worried about framing because surely this viewfinder won't give me an accurate representation of what is in frame since it is in a different position than the actual lens.
I am also quite new to the mechanics of focusing and finding the right aperture on a film camera. I have shot still photography on a 35mm film camera before, but I've always just kinda winged it.
If anyone can help me out and explain some of the mechanics of framing, focusing, and finding the right aperture on a Bolex Non-Reflex with these lenses please let me know!
If this is of any use, on my Bolex H16 Supreme, I have two lenses: a YVAR f/2.8 AR lens, and a LYTAR f/1.9 lens.