Pentax-A 100mm f2.8 brand_Rowi The OM-4 is a manual-focus

The OM-4 is a manual-focus 35mm SLR camera with a built-in averaging spotmeter system- which is pretty darn fancy

Lomography ISO 100 "Orca" black & white film for 110 cartridge cameras

A professional full-frame ultrawide lens with Canon's premium L glass and construction

ball-mounted cold shoe for flash or accessories

If this Calypso looks familiar

Pentax-A 100mm f2.8 brand_Rowi The OM-4 is a manual-focusThe Pentax A 100mm f2. 8 lens is pretty uncommon not rare, but way less plentiful than the M version. It's a nice, compact lens with excellent image quality and a built in lenshood. Clean glass, excellent cosmetic condition.