Description
EF40mm f/2.8 STM
The EF40mm f/2.8 STM comes in an ultra-compact and lightweight design, with a diameter of 68.2mm, a thickness of 22.8mm and weighing 130g making it the slimmest and lightest EF lens produced. A fast f/2.8 aperture, 7-blade circular aperture and aspherical lens elements let the lens achieve a high level of image quality from centre to corner.
- Focal length and maximum aperture : 40 mm 1:2.8
- Lens construction : 6 elements in 4 groups
- Diagonal angle of view : 57° 30’
- Focus adjustment : STM (Gear type), overall linear extension system, full-time manual focus
- Closest focusing distance : 0.3 m/ 1.0 ft., 0.18 x magnification
- Filter size : 52 mm
- Max. diameter x length, weight : ø 68.2 x 22.8 mm, 130 g/ 2.7” x 0.9”, 4.6 oz.
SPECIFICATIONS
| Angle of View (Diagonal) | 57°30’ | ||
| Angle of View (Horizontal) | 49°20’ | ||
| Angle of View (Vertical) | 34° | ||
| Closest Focusing Distance (m, ft) | 0.3/0.98 | ||
| Construction (groups elements) | 4-6 | ||
| Diameter x Length (mm) (Max.) | 68.2 x 22.8 | ||
| Distance Scale | o | ||
| Drive System | Stepping Motor-gear drive | ||
| Filter Size (mm) | 52 | ||
| Max. Magnification (x) | 0.18 | ||
| Min. Aperture | 22 | ||
| No. of Diaphragm Blades | 7 | ||
| Anti-dust and Moisture | Not Supported | ||
| Weight (g) (Approx.) | 130 |
