EF 300mm F4.0L IS USM

The Canon EF 300mm f/4L IS USM Autofocus Lens is controlled by a 16-bit microcomputer that minimizes blurred images due to camera shake. A special mode intelligently compensates just for up & down movement, providing sharp, stable images for panning. The optical design that compensates for all types of aberrations from infinity to the closest shooting distance of 4.9'. Two ultra-low dispersion (UD) glass elements ensure clear images and accurate color. Image Stabilization technology gives you the equivalent effect of up to 2 full shutter speeds slower handholdability than a conventional lens. And Canon's advanced ultrasonic focusing motor (USM) and rear focusing design provide silent, high speed autofocusing with fulltime manual focus override.

Compact L-series Telephoto lens with Image Stabilizer

UD elements eliminate secondary spectrum chromatic aberration

Two-stage image stabilization; dual-axis camera shake correction or vertical axis only (for panning)

Full-time manual focus override on lens

Performance
Focal Length 300 mm
Aperture Maximum: f/4
Minimum: f/32
Camera Mount Type Canon EF
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Canon (APS-C)
Angle of View 8°
Minimum Focus Distance 4.92' (1.50 m)
Magnification 0.24x
Maximum Reproduction Ratio 1:4.1
Groups/Elements 11/15
Diaphragm Blades 8
Features
Image Stabilization Yes
Autofocus Yes
Tripod Collar Yes
Physical
Filter Thread 77 mm
Dimensions (DxL) Approx. 3.5 x 8.7" (8.89 x 22.10cm)
Weight 2.62 lb (1.19kg)