Canon EF 40mm f/2.8 STM Lens Specifications

Lens Type:

Standard Prime Lens (Pancake design)

Focal Length:

40mm

Maximum Aperture:

f/2.8

Minimum Aperture:

f/22

Lens Mount:

Canon EF mount (compatible with full-frame and APS-C Canon DSLR cameras)

Format Compatibility:

Full-Frame and APS-C

On APS-C cameras, effective focal length approx. 64mm (due to 1.6x crop factor)

Optical Construction:

6 elements in 4 groups

Angle of View:

57° (Full Frame)

Approx. 39° (APS-C)

Minimum Focus Distance:

0.3 m (1.0 ft)

Maximum Magnification:

0.18x

Focus Type:

Autofocus with STM (Stepping Motor) for smooth and quiet focusing (ideal for video)

Manual Focus:

Full-time manual focus override

Image Stabilization:

No IS (Image Stabilization)

Filter Size:

52 mm (front)

Dimensions:

Diameter: Approx. 69.2 mm (2.7 inches)

Length: Approx. 21.5 mm (0.85 inches)

Weight:

Approx. 130 g (4.6 oz)

Additional Features:

Compact, lightweight "pancake" design for portability

Rounded 7-blade aperture for smooth bokeh and out-of-focus highlights

Suitable for street, travel, and general photography

STM motor ensures quieter focusing during video recording