Lens Summary
Brand: Canon
Also Known As: Canon 40mm f/2.8
Lens Type: Prime Lens
Format: Full Frame / FX
Focus: Autofocus
Lens Mount: Canon EF
Release Date: 2012-06-08
MSRP Price: $149
Made in: Japan
Infrared Rating: Good
Production Status: In Production
Lens Description: 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 center 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 color 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 while capturing video with the Canon EOS Rebel T4i DSLR, a circular aperture (7 blades) for beautiful soft-focus backgrounds, and a short minimum focusing distance of only 0.98 ft./0.30 m.
Canon EF 40mm f/2.8 STM Specifications
| Lens Specifications | |
|---|---|
| * Supplied accessories may differ depending on country or area | |
| Lens Type | Prime Lens |
| Focal Length | 40mm |
| Mount Type | Canon EF |
| Format | Full Frame / FX |
| Compatible Format(s) | 35mm Film / Full-Frame Digital Sensor Canon (APS-C) |
| Compatible with Teleconverters | No |
| Image Stabilizer (Image Stabilization) | No |
| Aperture Information | |
| Aperture Ring | No |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | f/22 |
| Maximum Angle of View (Full Frame format) | 56.8° |
| Optical Information | |
| Lens Elements | 6 |
| Lens Groups | 4 |
| Diaphragm Blades | 7 |
| SWC (SubWavelength Structure Coating) | No |
| Super Spectra Coating | No |
| Focus Information | |
| Focus | Autofocus |
| Built-in Focus Motor | Yes |
| UltraSonic Motor (USM) | No |
| Stepper Motor (STM) | Yes |
| Internal Focusing | Yes |
| Minimum Focus Distance | 0.30m |
| Distance Information | Yes |
| Filter Information | |
| Filter Size | 52mm |
| Accepts Filter Type | Screw-on |
| Physical Characteristics | |
| Weather / Dust Sealing | No |
| Mount Material | Metal |
| Tripod Collar | No |
| Dimensions | 68 x 27 mm |
| Weight | 130g |
| Other Information | |
| Available in Colors | Black |
| Supplied Accessories | 01/01/1900 |
Lens Construction
MTF Chart
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