In this comparison, the Canon 24-70L II trails the Sigma and Tamron lenses at 24mm and f/16, at least as far as my personal preference is concerned. Flare: Canon EF 24-70mm f/2.8L II USM vs. Sigma 24-70mm f/2.8 DG OS HSM Art Flare: Canon EF 24-70mm f/2.8L II USM vs. Tamron 24-70mm f/2.8 Di VC USD G2
Sony, Canon, Nikon, and Pentax Duke it Out in 24-70mm f/2.8 Shootout Canon Announces the Development of 6 New RF Lenses Hulking Attachment Gave Canon FD Lens Autofocus 40 Years Ago
I like the image better out of the Sigma vs. the EF mkII. My copy of the EF mkII has a magenta shift (as many Canon lenses do) that in this case goes just a bit too far IMO. The Sigma rivals (though is bested by) the RF 24-70/2.8 IMO in terms of sharpness, contrast, color rendition, distortion, and flare resistance.
Lenses with a built-in focus motor can autofocus even if the camera does not have its own focus motor. Has full-time manual focus. Canon EF 17-40mm f/4L USM. Canon EF 20mm F/2.8 USM. With full-time manual focus, you can move the focus ring whilst it is in AF (autofocus) mode.
The Canon EF 24mm f/2.8 IS USM Lens delivers fast and accurate AF, very good image quality and image stabilization in a light, compact and moderately-priced package. This of course sounds great - and truth is, I really like this lens.
However, in late 2012 Canon finally decided that it is time for a successor - the Canon EF 24mm f/2.8 USM IS. As you may notice the focal length and speed remained the same but Canon added a modern USM (Ultrasonic) AF as well as an image stabilizer. While USM is not really a killer argument in this range (the micro-motor AF drive was fast
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canon ef 24 2.8 is usm
