
This is an EF lens 500mm 4.0L IS USM.
Features
Diagonal Angle of View: 5°
Lens Construction (elements/groups): 17/13
Closest Focusing Distance (m): 4.5
Focus adjustment: Inner focusing system with USM
Filter Diameter (mm): 52 Rear Drop-in
Next-generation super telephoto L-series lens with an Image Stabilizer,
it's one of the world's best lenses for wildlife and nature photography
This 500mm super telephoto lens with Image Stabilizer system and large
aperture of f/4 is sure to have wide appeal. Its newly designed optical
system consists of 17 elements in 13 groups, including one fluorite lens
and two UD lenses. These have eliminated all kinds of aberrations to
achieve a level of image quality previously impossible to attain. With
ring USM and an improved drive algorithm, its autofocus is the fastest
in the world (when used with the EOS-3). The large f/4 aperture permits
the use of autofocus when using an extender. The lens's closest focusing
distance has been reduced to only 4.5m/ 14.8ft., and it is equipped with
full-time mechanical manual focus, a focus preset function, and an AF
Stop function. The use of a magnesium alloy for the lens barrel
minimizes weight and the lens offers superior dust-proof and
moisture-proof performance.
Photo Quote: Photography can only represent the present. Once photographed, the subject becomes part of the past. - Berenice Abbott