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 The vignetting of the Canon RF 28-70 mm f/2 L USM is quite modest. and downright very good if you take into account the extreme brightness. A maximum of 1.2 stops at full aperture in the wide-angle position is very good, and less than one stop at f/2.8 is a value that far less ambitious standard zooms don’t even come close to. This is a review of the Canon RF 24-70mm f/2.8 L IS USM.This pro level standard zoom was tested with the Canon EOS R5 across a variety of situations.It's an Shop for canon 24 70mm f 2.8l ii usm at Best Buy. Rating 4.9 out of 5 stars with 584 reviews EOS C70 4K Video Mirrorless Cinema Camera with RF 24-70 f/2.8 L Canon EOS R5 C Mirrorless Cinema Camera with 24-105 f/4L Lens. B&H # CAER5C24105 MFR # 5077C010. 65 Reviews. Key Features. EOS R5 C Mirrorless Cinema Camera. Canon RF 24-105mm f/4L IS USM Lens. Two Cameras in One Body: Photo + Cinema. sMkkyZ.