I'm pretty sure that was how my grade school pics were taken in school on picture day, lol.
I have a 4x5 camera like this one here.
It makes photographs on 4"x5" sheet film (either black and white or color negatives, or color slide film), and I also have a 120 roll film adapter to make 6x7cm photos (about 10 shots per roll).
A 4x5 film holder. It holds 2 sheets of film (loaded in the darkroom or a light proof changing bag. You compose the shot on the ground glass, then slide the film holder in, set the aperture and shutter speed, close the shutter, pull the darkslide from the film holder to allow the light to reach the film, then actuate the shutter. After the exposure is made you replace the darkslide, pull the holder from the camera, compose another shot flip the holder over and do it all again.
Then after the film is exposed you take it to the darkroom, remove the exposed film (in total darkness) place it in the developing tank, close it up, then under safelight develop the sheets of film.
A 120 roll film holder.
It makes a bit smaller image size, but has the convenience of roll film. And the film can be loaded and unloaded in subdued light, rather than a darkroom or changing bag.
