S Lenses


Serenar 50mm f/1.8 I

  • Specifications
  • Block diagram
Marketed November 1951
Original Price 26,000 yen
Lens Construction (group) 4
Lens Construction (element) 6
No. of Diaphragm Blades 10
Minimum Aperture 16
Closest Focusing Distance (m) 1
Maximum Magnification (x)
Filter Diameter (mm) 40
Maximum Diameter x Length (mm) 48 x 36.8
Weight (g) 270

A famous standard lens in the modern optics history, which succeeded in eliminating flare caused by coma, a drawback of Gauss type lenses. Based on the optical theory developed by this lens design, various high performance wide angle and telephoto lenses with large apertures were developed.

Block diagram