Valdai 58mm f2 Helios-44-2 for M42 lens mount_Topcon and this viewer does exactly

and this viewer does exactly what you'd expect

but for a 600mm lens

this bag can side stash a 17 inch laptop and is carry-on compliant for when we get back to flying around again

An unusual lens in good shape

plus a fast f2

Valdai 58mm f2 Helios-44-2 for M42 lens mount_Topcon and this viewer does exactlyThis Valdai 58mm f2 Helios 44 2 is a classic Soviet revision of an earlier Zeiss design, designed for the M42 thread mount. Smooth focusing, some oil on diaphragm which does not affect function, minor internal dust; cosmetic condition is very good, with a very light indent on the barrel which does not affect function, either. A fun lens in pretty solid shape.