
This is an EF lens 300mm 2.8L IS USM
Features
Diagonal Angle of View: 8° 15'
Lens Construction (elements/groups): 17/13
Closest Focusing Distance (m): 2.5 m / 8.2 ft.
Focus adjustment: Inner focusing system with USM
Filter Diameter (mm): 52 mm Rear Drop-in
Especially popular with sports and wildlife photographers
Successor of the EF300mm f/2.8L USM, this is a next-generation wide
aperture 300mm lens with a newly designed optical system to achieve even
better image quality. Its one fluorite lens and two UD lenses completely
eliminate secondary spectrum. It offers super high image quality with
both resolution and contrast higher than ever before. And the image
stabilizer that equals about 2 shutter speed steps maximizes the
performance of the lens under all photgraphy conditions. Its
autofocusing is the fastest in the world (when used with an EOS-3),
thanks to a ring USM and improved drive algorithm. Closest focusing
distance has been reduced to 2.5m, while operatibility has been
substantially improved by full time mechanical manual focus, improved
focus preset, and the introduction of an AF Stop function. The lens's
super light design includes a magnesium alloy lens barrel and it offers
good dust-proof and moisture-proof performance even under harsh
conditions. It comes with a removable tripod.
Photo Quote: The virtue of the camera is not the power it has to transform the photographer into an artist, but the impulse it gives him to keep on looking. - Brooks Anderson