The Canon RF 24-70mm F2.8 L IS USM is a hefty 900g and is 125.7mm long. The Nikon Z 24-70mm F2.8 S lens is 805g and 126mm long. Sony FE 24-70mm f/2.8 GM II SEL2470GMII User Reviews. The Sony (From Canon lens literature) Canon RF 24-70mm f/2.8 L IS USM Overview. The time has come and the wave of momentous advancements in the world of the EOS R full-frame mirrorless camera system Canon RF 24-105mm F4L IS USM Review Canon RF 24-240mm F4-6.3 IS Review Tamron SP 24-70mm f/2.8 Di VC USD Review Tamron 24mm F2.8 OSD M1:2 (F051) Review Tamron SP Discuss in the Canon EOS R Talk forum. The Canon RF 24-70 F2.8L IS USM is a standard zoom lens for the company's full-frame mirrorless system. It has a whopping 21 elements, including 3 aspherical and 3 UD elements. It uses a Nano USM motor to drive the focus group quickly and quietly. For a little context, the outstanding Canon EF 24-70mm f/2.8L II, a standard zoom for Canon DSLRs, is almost 20% smaller on all sides than the RF 28-70mm f2L. With 19 large elements in 13 groups, it’s also going to be a heavy lens. At 1430 grams (3.15 pounds), the RF 28-70mm f2L is almost as heavy as the EF 70-200 f2.8. From The-Digital-Picture: The Canon RF 28-70mm F2 L USM Lens is a large, heavy and expensive lens that is also awesome. Garnering a world’s first on its credit list, this lens brings the f/2 aperture to the extremely useful standard zoom lens. Our initial Sigma 24-70mm f2.8 Art Review gave the lens very high marks. It has 11 aperture blades, great image quality, and it’s weather sealed. Considering the price, it seems like an obvious But sometimes, you really have an actual purpose for getting an f2.8 lens. Here are the links to our reviews of the ones we recommend, along with their standard pricing: Canon RF 70-200mm f2.8 L The Nikon Z 24-70mm f2.8 S is a general-purpose zoom designed for Nikon’s full-frame Z-series mirrorless cameras and offers a one stop faster focal ratio than the Z 24-70mm f4.0 S 'kit zoom'. It performed very well in all of my tests regarding contrast, resolution, focus speed and reliability, colour aberrations, and coma, producing very good The Canon RF 28-70 2.0L has hand-down the best bokeh of any wide-mid range lens in its class. That 2.0 aperture really delivers! Canon EOS R | RF 28-70 f/2.0L | 70mm | 2.0 | 1/800 | ISO 125 by Jay Henington Focus Speed of the RF 28-70 2.0L. This Canon 28-70 F2 is also absolute lightning at focusing. dxIsy.