Helios-44-2 58mm f2 for M42 monitor and the stabilizer system is

and the stabilizer system is effective enough to make handheld shooting at full zoom possible

The Canon EOS M50 is a compact APS-C format mirrorless camera designed for use with Canon's EF-M series of lenses

the Prominent II can take a darn fine picture- and it really does feel like a precision instrument

with original case and filter holder/hood

Helios-44-2 58mm f2 for M42 monitor and the stabilizer system isThis Helios 44 2 58mm f2 is a classic Soviet revision of an earlier Zeiss design. Smooth focusing, clean diaphragm, minor internal dust; there's a decent amount of cosmetic paint and finish wear, but nothing more dramatic. A fun lens in good working order. Fits M42 thread mount cameras.