Canon EF 300mm f/4L IS USM

This EF300mm f/4L IS USM is characterized by outstanding mobility thanks to the outstanding image stabilizing system. The optics include 2 UD glass elements to thoroughly eliminate secondary spectrum.

Features

Focal length and maximum aperture: 300 mm 1:4
Lens construction: 15 elements in 11 groups
Diagonal angle of view: 8°15'
Focus adjustment: Rear focusing system with USM
Closest focusing distance: 1.5m / 4.9ft
Filter size: 77mm

Fixed focal length IS lens popularly used in wildlife and sports photography

Compact L-series telephoto lens with an Image Stabilizer which compensates for camera shake with equivalent effect of a shutter speed two stops faster. Two Image Stabilizer modes are provided: Stabilizer Mode 1 (the same mode featured on the EF 75-300mm f/4-5.6 IS USM) and the new Stabilizer Mode 2 which steadies the image during horizontal or vertical panning.
The image stabilizer also functions when using the Extender EF1.4xII or Extender EF2xII to provide that elusive 600mm shooting capability

Photo Quote: The more specific you are, the more general it'll be. Diane Arbus