has a silent focus motor built into the lens. Canon EF 16-35mm F2.8L III USM. Canon EF 24-70mm F/2.8L II USM. Lenses with built-in focus motor focus faster and more quietly than lenses without a focus motor which rely on the camera's body focus motor. minimum focus distance. 0.28m. 0.38m. This is the closest distance that the lens can focus.
Canon EF 70-200mm f/4L IS II USM Performance. Sharpness at 70mm gets us off to an excellent start. Results are excellent both centre and edge from f/4 through to f/8, very good at f/11 and f/16
The similarly-built Canon EF-S 10-22mm f/3.5-4.5 USM Lens turned in similar optical results to the 17-55 IS in the short range of focal lengths that overlap. I see these lenses more as complementary than competing. At all overlapping focal lengths and apertures, the 17-55 is sharper than my Canon EF 24-70mm f/2.8L USM Lens.
Ease of Use. The RF 70-200mm F4L IS USM lens is officially the World's shortest and lightest 70-200mm lens with a maximum aperture of f/4 for 35mm full-frame cameras. It weighs in at a mere 695g and measures just 11.9cm in length. This makes it a little longer than a tin of baked beans and a little shorter than a can of beer!
The EF 24-70mm f/4L IS USM is the professional-grade standard zoom lens for Canon's full-frame and APS-C DSLRs. Featuring a fast f/2.8 maximum aperture throughout its zoom range, Super Spectra coatings, an ultrasonic focus motor, a nine-blade circular aperture, silent high-speed AF performance, full-time manual focusing and dust/moisture resistance, the Canon 24-70mm f/2.8 is ideally suited to
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canon 24 70mm f 4l is usm review
