I think that the problems with the shutter are because the Soviets regarded
quality control as a depraved Capitalist idea they'd have nothing to do
with. I haven't used the Smena that much because i've got a whole bunch of
cameras.
You need a reloadable casette to serve as take-up spool.
You keep the whole casette so the film does not need rewinding. I do believe
that the later Smenas had a rewind but mine certainly doesn't.
I also purchased the BLIK ranngefinder to go with it.
The lens is a triplet, a mild wide angle as most compacts are.
The lens is soft in the outer field at wider apertures, which you can use to
advantage.
The Chinese film is very prone to halation around bright areas, like the sky
because it isn't back coated