Petri C.C. Auto f1.8 55mm Prime Lens M42 42mm mount Japan

This vintage lens is in good condition, and is compatible with all M42, 42mm screw mount cameras (e.g., Pentax). Focus and aperture rings move freely without resistance. Lens is free of fungus and scratches. Specifications: Lens Mount: M42 Screw mount; Focal Length: 55mm; Maximum Aperture: F1.8; Minimum Aperture: F22; Number Of Aperture Blades: 6; Minimum Focusing Distance: 0.5m; Filter Size: 52mm; Settings: Manual/Auto.

You can use vintage lenses on any digital camera with appropriate adapters. However, you lose autofocus and auto f-stop, and these must be manually controlled in the vintage lens (like the olden days). Some lens conversions, like Canon FD to Canon EOS mount, increases the focal distance, making the lens a macro, with the loss of focus at infinity.