>>4488129There isn't one, they were extremely nice (and expensive as hell) back when they were on the market, bc they don't do a million things, they just do the essentials and do them very very reliably. They also have an actual claw, doing a proper serpantine motion, unlike most compact movie cameras which typically just cheap out and use a gear to yank the film along. They have a 4 position shutter button for run, run (lock), + you can nudge it upward to take a still, either for stop motion animation or whatever.
They're priced low bc before FPP reintroduced 16mm magazines, you couldn't get mag film at all, which made all the compact cams worthless. ...I've picked up a half dozen expired kodachrome magazines just to get the empty mags, and am loading my own now from a big 400' roll to save more $ on my next project.
The rounded model of the Filmo is the nicest to hold, though I'm not a fan of handheld. The boxy later version with the chrome plates on the back are available in gray and black, and both of those have a nice ratcheting winder. They have different front face & lens arrangements. The double turret is handy but still flat & small enough to pack small, though the pull rod in the center was in the way of our big Nikkor lens. The 3-lens turret is nice but is big & clunky to carry. The single lens face comes kitted with a very sharp 20mm lens (equivalent to a 40mm angle of view on 35/FF).
There is also an EE model to avoid, it's got electronic metering & auto exposure tacked on, which worked great when film ISO's were much slower, but are practically useless today. Skip the EE models.
If you really want to geek out, Angenioux made a reflex zoom lens assembly for them. I tried a couple, they're pretty interesting, but they're in high enough demand they sell for a few hundred, and of course a prime lens will give you much sharper image than an old zoom.
They're so cheap you can just get a few just to play with em.