Identification
The front name plate on the front of the lens is marked as "CANON LENS EF 50mm 1:1.8 II".
Technical Specifications
General:
- Focal Length: 50 mm
- Maximum Aperture: f/1.8
- Minimum Aperture: f/22
- Closest Focusing Distance: 0.4 m (1.5 ft)
- Maximum Magnification: 0.15 x
Construction:
- Lens Groups: 5
- Lens Elements: 6
- No. of Diaphragm Blades: 5
- Focus Adjustment: Overall linear extension system with Micromotor
Physical:
- Lens Mount Type: Canon EF
- Filter Diameter: 52 mm
- Maximum Diameter x Length: 68.2 x 41.0 mm (2.7 x 1.6 in)
- Weight: 130 g (4.6 oz)
Accessories:
- Lens Cap: E-52 II
- Lens Hood: ES-62
- Lens Case: LP1014
Source: Canon Camera Museum Webpage