The Amar S 4.5/105 is a vintage medium-format enlarging lens made by PZO Warszawa (Polskie Zakłady Optyczne) in Poland during the 1980s.
Key Specifications:
• Type: Medium-format enlarger lens (designed for negatives up to 6x9 cm).
• Optical Design: Simple 4-element Tessar formula.
• Focal Length: 105 mm.
• Aperture Range: f/4.5 to f/16, with 6 metallic blades.
• Mount Options: Commonly found with an M42 screw thread (or M39 variants depending on the production run).
• Coatings: Typically uncoated or minimally coated, making it prone to flaring.
Made in Poland
