DxOMark has published the results of their findings on the optical performance of the Canon RF 28-70mm F2.0 L USM, the data can be found at the DxOMark site. In addition to the performance data, as one of the editors I have written the lens review. This can be found on a different page on the DxOMark site here. It’s a high-speed zoom with a constant F2.0 aperture and it has impressive optical performance overall, but be warned it’s not cheap. The review talks only of the optical properties, there is no comment on handling, build quality, AF or other subjective areas. It’s an idea to look past the overall score –…