EF 300 mm f4.0 L USM IS
Diagonal Angle of View: 8° 15' Lens Construction (elements/groups): 8/7 No. of Diaphragm blades: 8 Minimum Aperture: 32 Closest Focusing Distance (m): 2.5 Maximum Magnification (x): 0.13 AF Actuator: USM Filter Diameter (mm): 77
Compact L-series telephoto lens with an Image Stabilizer that compensates for camera shake with the equivalent effect of a shutter speed two stops faster
A more portable 300mm telephoto lens. Two UD-glass elements effectively correct secondary spectrum. Superb resolution and contrast. Astigmatism is also corrected, and background blur is soft and nice. Built-in hood with a locking mechanism.
Canon EF 300 mm f4.0 L USM IS. Lens structure (elements/groups): 8/7, Thread diameter: 3.54" (9 cm), Diagonal angle of view (max): 8.6°. Filter size: 3.03" (7.7 cm), Weight: 2.58 lbs (1.17 kg). Magnification: 0.13x