Canon EF 300mm f/4L IS USM

Specifications

Focal Length & Maximum Aperture	300mm 1:4.0
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
Filter Size	77mm
Max. Diameter x Length, Weight	90.0 x 221.0mm, 1190g

Cranes

Bosque del Apache, NM, USA / December 2007