Canon EF 70-300mm f/4.5-5.6 DO IS USM L Product Information:

High magnification 70-300mm zoom lens with Image Stabilizer
Image Stabilizer gives equivalent effect of a shutter speed three stops faster during hand-held shooting
Three-layer type DO (Diffractive Optics) lens optimised for zoom lens optics
DO design offering more compact size than other zoom lenses with equivalent focal lengths and aperture
Optimised lens coating to minimise ghosting and flare
Zoom ring locking mechanism that locks the lens at its shortest total length
Circular aperture producing attractive background defocus
Rear focusing, ring USM and new AF algorithms for fast and quiet autofocusing
Manual focusing enabled even during the AF mode
Only lead-free glass used in lens

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Canon EF 24-70mm f/2.8L USM Specifications :

Focal Length & Max Aperture: 24-70mm 1:2.8
Weight: 950g
Filter Diameter: 77mm
Magnification with Extension Tube EF12: 0.63x - 0.18x
Magnification with Extension Tube EF25: 1.25x - 0.40x
Diagonal Angle of View : 74˚ - 29˚ (43.2mm)
Horizontal Angle of View: 84˚ - 34˚ (36mm)
Lens Construction : 16 elements in 13 groups
Diameter x Length (mm): 83.2 x 123.5 mm
Minimum Aperture: f/22
No. of Diaphragm blades: 6
Closest Focusing Distance (m): 0.48m
Minimum f/stop: f/22 (at 28mm)
Focus Drive: Ultrasonic
Closest Focusing Distance: 0.38m

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