Description
EF50mm f/1.4 USM
By optically distributing power with a gauss type design and two high- refraction glass lenses, flare at maximum aperture is minimized and astigmatism is greatly reduced. Moreover, improvements in the quality of the focused image and the beautiful natural blur of the background are simultaneously achieved. Use of a Micro USM (Micro Ultrasonic Motor) provides fast, silent autofocusing, as well as full-time manual focus. The colour balance is virtually identical to the ISO recommended reference values.
- Focal length and maximum aperture : 50 mm 1:1.4
- Lens construction : 7 elements in 6 groups
- Diagonal angle of view : 46°
- Focus adjustment : Micro USM, overall linear extension system, full-time manual focus
- Closest focusing distance : 0.45 m/ 1.5 ft., 0.15 x magnification
- Filter size : 58 mm
- Max. diameter x length, weight : ø 73.8 x 50.5 mm, 290 g/ 2.9” x 2”, 10.2 oz.
SPECIFICATIONS
| Angle of View (Diagonal) | 46° | ||
| Angle of View (Horizontal) | 40° | ||
| Angle of View (Vertical) | 27° | ||
| Closest Focusing Distance (m, ft) | 0.45/1.5 | ||
| Construction (groups elements) | 6-7 | ||
| Diameter x Length (mm) (Max.) | 73.8 x 50.5 | ||
| Distance Scale | – | ||
| Drive System | Micro USM | ||
| Filter Size (mm) | 58 | ||
| Max. Magnification (x) | 0.15 | ||
| Min. Aperture | 22 | ||
| No. of Diaphragm Blades | 8 | ||
| Anti-dust and Moisture | Not Supported | ||
| Weight (g) (Approx.) | 290 |
