This is kind of an off the wall topic. I recently bought an FR developing tank for sheet film (partly because I don't have a proper darkroom yet, so tray developing is difficult or impossible). This is a well-known older design that's adjustable for different sizes from 4x5 down.

But I noticed that in addition to the usual sizes, this thing can be adjusted to take pieces of film as narrow as 45mm (1 3/4"). Did anyone ever make cameras for such small sizes of sheet film, and what were they?

Mike Taglieri

Sixteenth sheet tin types.
Take a look at
https://en.wikipedia.org/wiki/Film_format
and good luck getting even developing in that slosher.

45PSS wrote:

Sixteenth sheet tin types. Take a look at https://en.wikipedia.org/wiki/Film_format and good luck getting even developing in that slosher.

Thanks. I didn't know this Wikipedia page existed.

Concerning my "slosher," I realize uneven agitation is the big problem with these tanks. For the time being, I plan to develop 6 sheets at once rather than 12 to give better spacing. Also, it didn't take many tests to show me the reason sloshing back and forth is the method in the instructions -- the thing leaks like crazy if you try to invert it. But if I tape the cover on with 2" masking tape, I should be able to invert it completely like the stainless-steel tanks I use in 35mm.

I started off with one but could never stop the leaking or get even developing. I ended up with Jobo 2500 tanks and reels. Work great.
Sometimes you can find them on ebay from a seller that isn't trying to get as much as they can.
Older numbering system 25xx film, 28xx print. Same tank but different lid.
2521 magnet base, 2523 cog lid, both with center column, single 4x5 reel (2509n); 28xx funnel lid, no center column.
The manual roller base, whatever its current model number is, is adjustable to all Jobo tanks. Although the tank says 270ml chemicals for rotary processing 300ml works best. With rotary processing an equal number of turns in each direction is necessary to prevent streaking. I do a finger tip to palm for 1 minute then a palm to fingertip for 1 minute, fraction of a minute for the final direction does not matter.