The EF 24-70mm f/4L IS USM Lens from Canon is optimized for complete-frame 35mm sensors, and one more entry into Canon's high class L-series of lenses. It has 2 Super Ultra-low Dispersion (Super UD) and 2 standard UD lens elements functioning mutually to reduce chromatic aberrations, and minimize color smudging around the boundaries of your object. Its two kinds of aspherical elements join to help minimize spherical aberration over the whole image area and the complete zoom range. Optimized lens coverings help ensure outstanding color rendering while decreasing ghosting.
Its type of ring high-speed CPU and Ultra Sonic Motor (USM) with optimized AF algorithms, make sure you experience rapid, quiet and full auto focusing every time you require it. The lens has better dust and moisture resistance to guard it from damage outdoors, on the other hand fluorine coatings on the front and back lens surfaces oppose fingerprints and smearing. The rounded 9-bladed diaphragm produces stunning, supple background effects. A zoom lock lever grasps the zoom position at 24mm wide end for secure transporting while joined to an EOS DSLR camera over the shoulder - stopping lens creep.
Establishing image stabilization to their 24 to 70mm L-series lenses, Canon's Hybrid IS offers 4 stops of useful shutter speed compensation for both kinds of camera shake when executing macro photography: angular and shift. This means you can shoot in dimmer circumstances, capturing images with shutter speeds up to 4 stops slower than would or else be possible.
This optical lens' design uses 2 Super UD and 2 UD lens elements to reduce chromatic aberration in the ends of your wide-angle shots. It also eradicates color blurring around the edges of objects, for images with better resolution and contrast.
In addition to the elements of UD, this lens joins two kinds of aspherical lenses to decrease spherical aberration and attain better image quality across both the whole screen area and all through the full 24 to 70mm Zoom range.
A ring-type USM and fast-speed CPU having optimized AF algorithms allow silent and rapid auto focusing to help you focus correct on the action.
This lens has a smallest amount focusing distance of 1.25' (0.38 m) across the whole zoom range, not including the macro mode.