My grandfather's old camera was recently found and given to me. It is a Kodak No. 2A, which likely dates from the late 20s. It has 4 shutter settings: T (press to open, press to close), B (open while pressed), "25" and "50." It takes 116 film, has a "ruby window" on the back, and features an iris (both the iris and shutter are in front of the glass element, which I assume is a single element) with settings of 1, 2, 3, and 4, corresponding to no system I know of, but which appear to be in roughly 1 stop ratios to one another. The rotating, plus-shaped waistlevel finder is fogged almost beyond visibility. The bellows lock into preset 8 ft or 100 ft focusing positions.
I've seen pictures of my father as a young man, taken 25 years into the camera's life, and that those pictures exist at all is, to me, a testament to my grandfather's skill as a photographer. With no meter (and I know he carried none), difficult orthochromatic films of the day, and arcane (to say the least) means of controlling exposure, I figure a person had to be serious about learning his stuff to use the thing. The difficulty of adapting it for use today has prevented me from doing so, so I keep it on display on a shelf as a tribute to my grandfather.