The EF 70-200mm F4L USM Lens from Canon is a professional zoom telephoto suitable for a broad range of applications from sports to portraiture. It is fully compatible with the Extender EF 1.4x II and 2x II teleconverters (requires f/8 AF sensitivity with EF 2x II).
Like every autofocus Canon "L" lens, the EF 70-200mm F4LUSM delivers optical performance equal to similar fixed focal length lenses, with silent, high-speed ultrasonic (USM) focusing and full-time manual focus override capacity. A focus range limiting option also enables faster autofocus rates.
Distortions and aberrations are remarkably small for a lens of such capability. This lens combines 1 artificial fluorite element with 2 UD (Ultra-low Dispersion) elements to help achieve images free of secondary spectrum aberrations, which are often the bane of consumer-grade telephoto zooms. It is light enough to not need a tripod collar (86% lighter than the EF 70-200mm F2.8L), but for handling purposes there is an optional tripod collar.
The minimum focusing distance is 3.9' (1.2m) throughout its entire range of focal lengths, and it accepts 67mm screw-in filters.
Lens Type: Telephoto Zoom
Focal length - wide (mm): 70
Focal length - tele (mm): 200
Max aperture – wide: 4.0
Max aperture – tele: 4.0
Minimum aperture: 32
Minimum focus distance (m): 1.2
Image stabilization: No
Sensor format: Full Frame
Lens mount: Canon EF
Lens elements: 16
Lens groups: 13
Aperture blades: 8
Filter thread (mm): 67
Enlargement Ratio: 1:3.8
Autofocus motor: USM
Focus mechanism: Internal Focusing
MF switch: Yes
Tele-converter compatibility: 1.4x & 2x
Size: 76 x 172 mm
Weight (g): 705