The Canon EF 70-200 F2.8L IS III USM is the third revision of the company's professional-level mid-telephoto zoom. The Mark III has the same optical design to its predecessor but adds an Air Sphere Coating to reduce flare and ghosting as well as fluorine coatings on the front and rear elements to keep away fingerprints and moisture. The lens's IS system can reduce shake by up to 3.5 stops, has five UD and 1 fluorite element as well as a circular aperture. The minimum focus distance is 1.2m/3.9ft.
| Lens type Zoom lens |
| Max Format size 35mm FF |
| Focal length 70–200 mm |
| Image stabilization Yes |
| CIPA Image stabilization rating 3.5 stop(s) |
| Lens mount Canon EF |
| Aperture |
| Maximum aperture F2.8 |
| Minimum aperture F32 |
| Aperture ring No |
| Number of diaphragm blades 8 |
| Optics |
| Elements 23 |
| Groups 19 |
| Special elements / coatings Five fluorite and five UD elements, ASC and fluorine coatings |
| Focus |
| Minimum focus 1.20 m (47.24″) |
| Autofocus Yes |
| Motor type Ring-type ultrasonic |
| Full time manual Yes |
| Focus method Internal |
| Distance scale Yes |
| DoF scale No |
| Focus distance limiter Yes |
| Physical |
| Weight 1440 g (3.17 lb) |
| Diameter 89 mm (3.5″) |
| Length 199 mm (7.83″) |
| Materials Magnesium alloy |
| Sealing Yes |
| Colour White |
| Zoom method Rotary (internal) |
| Power zoom No |
| Zoom lock Unknown |
| Filter thread 77 mm |
| Hood supplied Yes |
| Tripod collar Yes |
