The Canon EF 70-300mm f/4.5-5.6 DO IS USM Lens is a relatively compact telephoto zoom offering superior maximum-aperture performance across its entire focal length range. It incorporates Canon's DO (Diffractive Optics) and IS (Image Stabilizing) technologies.
The use of Diffraction Optics allows a lens to be shorter, lighter, and of higher image quality than comparable normal optical systems of the same focal length and aperture-while this lens is heavier than the consumer-grade EF 70-300mm f/4-5.6 IS USM lens, it is 28% shorter and uses Canon's very best ring-USM motor instead of the lighter, slower, and less costly 'micro-USM' motor.
Beyond savings in mass, the DO lens performs admirably at its maximum aperture, with images that are very comparable to the "L" series telephotos. It has a circular aperture diaphragm to help create natural out-of-focus highlights, and its built-in image stabilizer allows you to handhold the lens at shutter speeds 3 steps slower than would otherwise be possible.
The lens' AF is super-fast and silent with a ring-type USM that focuses down to 4.6', and features a zoom lock button that keeps the lens safe and secure when not in use or when being used at the shortest 70mm focal length setting. The EF 70-300mm f/4.5-5.6 DO IS USM is an ideal lens for sports, portraiture, animals, and other applications when you're shooting in relatively bright light.
| Performance | |
|---|---|
| Focal Length | 70 - 300 mm |
| Aperture |
Maximum: f/4.5 - 5.6 Minimum: f/32 - 40 |
| Camera Mount Type | Canon EF |
| Format Compatibility |
35mm Film / Full-Frame Digital Sensor Canon (APS-C) |
| Angle of View | 34° - 8° |
| Minimum Focus Distance | 4.60' (1.40 m) |
| Magnification | 0.19x |
| Maximum Reproduction Ratio | 1:5.2 |
| Groups/Elements | 12/18 |
| Diaphragm Blades | 6 |
| Features | |
|---|---|
| Image Stabilization | Yes |
| Autofocus | Yes |
| Tripod Collar | No |
| Physical | |
|---|---|
| Filter Thread | 58 mm |
| Dimensions (DxL) | Approx. 3.2 x 3.9" (8.13 x 9.91 cm) |
| Weight | 1.58 lb (720 g) |