This means that you can make manual adjustments once the AF has finished, without changing to manual mode. has a silent focus motor built into the lens. Canon EF 24-70mm F/2.8L II USM. Canon EF-S 17-55 F/2.8 IS 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
Key Features. EF-Mount Lens/Full-Frame Format. Aperture Range: f/1.4 to f/22. Two Aspherical and Two UD Elements. Sub Wavelength Coating. Show More. Blending a favored wide-angle focal length with a bright maximum aperture, the EF 24mm f/1.4L II USM is a Canon L-series lens characterized by a robust physical construction and sophisticated
介绍佳能EOS数码单反相机用镜头EF 24-105mm f/4L IS USM主要 EF 16-35mm f/2.8L II USM EF 24-70mm f/2.8L USM EF 24-105mm f/4L IS USM EF 28-135mm f
Canon EF-S 18-135mm F3.5-5.6 IS USM vs. Canon EF-S 18-135mm F3.5-5.6 IS STM vs. Canon EF-S 15-85mm f/3.5-5.6 IS USM vs. Canon EF 24-105mm F3.5-5.6 IS STM vs. Canon EF 24-105mm f/4L IS USM Side by side
Image quality comparisons I have made show that: At 24mm with a wide open aperture, the 24-70 f/4L IS bests the 24-105 L IS in sharpness by a modest amount. The 24-105 L delivers a sharper image at 50mm f/4, but at 70mm the 24-70 f/4L is back up to near equality with the 24-105 L.
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canon ef 24 105mm f 4l is ii usm vs 24 70mm