Canon EF 24mm f/2.8 IS USM Lens

Providing a wide field of view in a compact package, the Canon EF 24mm f/2.8 IS USM is a versatile wide-angle prime characterized by its fast performance and image stabilized design. The optical design utilizes one aspherical element to reduce spherical aberrations and distortion for high sharpness, and a Super Spectra coating...

Canon

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Providing a wide field of view in a compact package, the Canon EF 24mm f/2.8 IS USM is a versatile wide-angle prime characterized by its fast performance and image stabilized design. The optical design utilizes one aspherical element to reduce spherical aberrations and distortion for high sharpness, and a Super Spectra coating has also been applied to suppress flare and ghosting for increased contrast and color accuracy. Benefitting the optical assets is a four-stop-effective Image Stabilizer, which minimizes the appearance of camera shake for sharper handheld images. Also, a ring-type USM realizes quick, quiet, and smooth autofocus performance along with full-time manual focus override.

Wide-angle 24mm f/2.8 lens is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 38.4mm equivalent focal length.
Bright f/2.8 maximum aperture benefits working in low-light conditions and also affords control over depth of field for working with selective focus techniques.
One aspherical element helps to suppress spherical aberrations and distortion for a high degree of 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 Optical Image Stabilizer helps to minimize the appearance of camera shake by up to four shutter speed stops to better enable working in low-light conditions and with slower shutter speeds.
A ring-type Ultrasonic Motor (USM), along with a rear focusing system, is employed to deliver fast and precise autofocus performance as well as full-time manual focus override.
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.
Performance
Focal Length 24mm
Aperture Maximum: f/2.8
Minimum: f/22
Camera Mount Type Canon EF
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Angle of View 84°
Minimum Focus Distance 7.87" (20 cm)
Magnification 0.23x
Optical Design 11 Elements in 9 Groups
Diaphragm Blades 7, Rounded
Features
Image Stabilization Yes
Autofocus Yes
Physical
Filter Thread Front: 58 mm
Dimensions (DxL) Approx. 2.69 x 2.19" (68.4 x 55.7 mm)
Weight 9.88 oz (280 g)