Canon 24-70mm f/2.8L EF USM (8014A008)
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Canon 24-70mm f/2.8L EF USM | |||||||||||||||||||||||||||||||||||
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. Advanced "station wagon": with a range of focal lengths of 24-70 mm, it has a constant aperture of f / 2.8. Applies to Canon systems with EF mount and full frame sensors. The design includes 16 elements in 13 groups, and an ultrasonic motor is used for autofocus. The diaphragm, however, has only 6 blades.
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EF 24-70 mm f/2.8L USM provides extended zoom range; while the focal length in the wide-angle position is only 24 mm. New design features of the lens increase the range of focal lengths, while maintaining consistently high image quality. At the same time, the minimum focus distance has been reduced from 0.5m to 0.38m.
Optical characteristics of a zoom lens
The EF 24-70mm f/2.8L USM uses two types of aspherical lenses to achieve a wider zoom range of 24-70mm. These two elements provide good compensation for zoom distortion while maintaining the excellent image quality of the previous EF 28-70 mm F.2.8L USM.
The optical design of the EF 24-70 mm f/2.8L USM uses a UD (Extra-Low Dispersion) lens that is excellent at compensating for chromatic aberrations that occur when shooting at wide angle. The optical power of the focus group has been increased, as a result of which the minimum focal length has decreased to 38 cm throughout the entire range of focal lengths, which is the shortest focal length for lenses in this class *.
The new type electromagnetic diaphragm (EMD) has an almost round hole when fully opened. This improves the blurring of the background outside the focus area.
All elements are made of environmentally friendly glass that does not contain lead.
Mechanical characteristics
The lens mount, switch panel, zoom ring and focus ring of the EF 24-70 mm f/2.8L USM are water and dust resistant, making it perfect for shooting in difficult conditions. In addition, a special high-performance coating minimizes spurious images.
The EF 24-70 mm f/2.8L USM autofocus is quiet and fast thanks to rear focus and a ring ultrasonic motor. Manual focus is possible even in autofocus mode.
The length of the lens does not change during zooming, and its front part does not rotate during focus and zooming. Therefore, various accessories can be mounted on the front of the lens without any restrictions related to its rotation or movement.
Accessories
The EF 24-70 mm f/2.8L USM comes standard with a lens hood (EW-83F) and soft case.
