Canon EF 40mm f/2.8 STM Lens

SKU # can.6310B002

Regular Price: $199.99
Instant Savings: $20.99

$179.00

This lens is recommended for use with the Nauticam Macro to Wide Angle Lens 1 (MWL-1) when paired with a Canon APS-C camera inside a Nauticam housing.

Product Highlights

  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/2.8 to f/22
  • One Aspherical Element
  • Super Spectra Coating
  • STM Stepping Motor for Smooth, Silent AF
  • Rounded 7-Blade Diaphragm

In the Box

Characterized by its slim, pancake design, the EF 40mm f/2.8 STM from Canon is a sleek and versatile short-normal prime that is ideal for everyday, walk-around shooting. Its f/2.8 maximum aperture helps to realize its slim stature, and also suits working in difficult lighting conditions and offers control over depth of field for working with selective focus techniques. One aspherical element has been incorporated in the optical design, and helps to reduce distortion and spherical aberrations for high sharpness and clarity. A Super Spectra coating has also been applied, which helps to minimize lens flare and ghosting for improved contrast and color fidelity in strong lighting conditions. Additionally, benefitting both photo and video applications, an STM stepping AF motor is used to realize quick, accurate, and near-silent autofocus performance.

Short normal-length prime is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 64mm equivalent focal length.
Modestly bright f/2.8 maximum aperture benefits working in low-light, affords control over depth of field, and helps to keep the overall physical design compact and lightweight.
Pancake form factor measures less than 1" thick for an ultra-portable, versatile design.
One aspherical element limits distortion and spherical aberration in order to realize greater sharpness and accurate rendering.
Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.
An STM stepping AF motor realizes smooth, near-silent autofocus that is complemented by a rear focus system, advanced AF algorithms, and a high-speed CPU for fast AF performance.
Rounded seven-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.

Canon 40mm f/2.8 Specs

Focal Length 40mm
Maximum Aperture f/2.8
Minimum Aperture f/22
Lens Mount Canon EF
Format Compatibility Full-Frame
Angle of View 57°
Maximum Magnification 0.18x
Minimum Focus Distance 11.81" / 30 cm
Optical Design 6 Elements in 4 Groups
Diaphragm Blades 7, Rounded
Focus Type Autofocus
Image Stabilization None
Filter Size 52 mm (Front)
Dimensions (DxL) 2.69 x 0.90" / 68.2 x 22.8 mm
Weight 4.6 oz / 130 g
Packaging Info
Package Weight 0.51 lb
Box Dimensions (LxWxH) 4.6 x 4.4 x 4.3"