EF Lenses


EF50mm f/1.4 USM

  • Specifications
  • Block diagram
Marketed June 1993
Original Price 49,000 yen
Lens Construction (group) 6
Lens Construction (element) 7
No. of Diaphragm Blades 8
Minimum Aperture 22
Closest Focusing Distance (m) 0.45
Maximum Magnification (x) 0.15
Filter Diameter (mm) 58
Maximum Diameter x Length (mm) 73.8 x 50.5
Weight (g) 290

This is an essential standard lens for EOS family. This lens starts with the optical design concept of the FD 50mm f/1.4, which has always been highly regarded for its superior sharpness and color balance. Two high-refraction glass lens elements minimize flare at maximum aperture and eliminate astigmatism. Improvements in the quality of the focused image and a beautiful, natural blur of the background are realized. A micro USM (Ultrasonic Motor) provides fast, silent AF and full-time manual focusing. Color balance is virtually identical to the ISO recommended reference values.

Block diagram