Canon EF 24-70mm f/2.8 L USM Lens

Canon EF 24-70mm f/2.8 L USM Lens The Canon 24-70mm f/2.8L USM is a terrific new standard zoom L series professional len. The Canon 24-70mm f/2.8 boasts an impressive focal length, aperture and a highly effective dust and moisture protection system. Features Improved Autofocus speed over it's predecessor 2 Aspherical elements for high image quality through the zoom range 1 UD element to effectively correct chromatic aberration at wide angle Highly effective dust and moisture protection Class leading minimum focus distance of only 38cm Non-rotating front element during focus Regarded as one of the best general purpose lenses available and one of the most-professionally-used Canon lenses. The Canon 24-70mm f/2.8 Lens is a very sharp lens - few zoom lenses reach this level of sharpness. Image quality is not the only pro-grade feature of the Canon EF 24-70mm f/2.8 L USM Lens. Excellent AF is part of the equation. A Ring USM AF system delivers quiet, fast and accurate autofocus. The 24-70 L's f/2.8 aperture enables the enhanced-sensitivity of many Canon DSLR body's AF points. The 24-70mm f/2.8 is by far the best wedding lens for many professional photographers. As portraits are a staple of wedding photography, the Canon 24-70mm f/2.8 L USM Lens makes a great portrait lens. On a full frame body, group, environmental and moderately tight portraits work best. Other than wedding photography, the Canon EF 24-70mm f/2.8 L USM Lens is often employed for sports needs in this focal length range. Since sports action is usually moving fast, the f/2.8 aperture is often the minimum opening necessary to stop action at these venues. Canon 24-70mm f/2.8 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 Minimum f/stop: f/22 (at 28mm) Focus Drive: Ultrasonic Closest Focusing Distance: 0.38m