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Canon EF 40mm f/2.8 STM Lens
Summary
A unique and indispensable addition to Canon's series of EF lenses, the new EF 40mm f/2.8 STM offers an ultra-slim and lightweight design. Incredibly compact in size, the EF 40mm f/2.8 STM delivers high-image quality from the centre to the periphery thanks to its advanced lens configuration including an aspherical element, a bright 2.8 aperture and optimized coatings that minimize ghosting and flare while providing exceptional colour balance. The EF 40mm f/2.8 STM's unobtrusive design helps the photographer avoid overwhelming their subjects with a large lens and to remain discreet in sensitive shooting situations with no compromise in performance. Its diminutive design is complemented by features such as a newly developed stepping motor for smooth and quiet continuous AF on any Canon DSLR capable of capturing video, a circular aperture (7 blades) for beautiful soft-focus backgrounds and a short minimum focusing distance of only 0.98 ft./0.30 m.
Features
- Compact size, incredible image quality
- New STM for smooth and quiet continuous AF
- Ultra slim and lightweight
- Advanced lens configuration
- Bright 2.8 aperture and optimized coatings that minimize ghosting and flare
Optics
- Focal Length Fixed (mm):
- 40
- Zoom Ratio:
- 4.3x
- Maximum Aperture (f/):
- 1-2.8
- Maximum Diagonal Angle of View:
- 57° 30'
- Maximum Reproduction Ratio:
- 0.18
Mechanics
- Lens Elements:
- 6
- Lens Groups:
- 4
- Diaphragm Blades:
- 7
- Focus Adjustment Type:
- Internal focusing System
- Minimum Focus Distance (m):
- 0.3
- Minimum Focus Distance (feet):
- 0.98
- Filter Size (mm):
- 52
- Accepts Filter Type:
- Screw-on
Dimensions
- Maximum Diameter (mm):
- 68
- Maximum Length (mm):
- 22.8