About Canon EF 400mm f/4 DO IS USM Super Telephoto Lens for Canon SLR Cameras:
Incorporates Diffractive Optics, Image Stabilizater & Ultrasonic Motor technologies
Features Canon EF 400mm f/4 DO IS USM Super Telephoto Lens for Canon SLR Cameras:
- EF mount; super telephoto lens
- Fluorite glass; diffractive optics; image stabilizer; internal focusing
- 400mm focal length
- f/4 maximum aperture
- Micro UltraSonic Motor (USM)