As mentioned, the 24-105 has dramatically stronger barrel distortion at the wide end and slightly stronger pincushion distortion at 70mm. The Canon RF 24-105mm F2.8 L IS USM Z Lens vs. RF 24-70mm F2.8 L IS USM Lens comparison shows the 24-105 considerably larger and heavier – 46.9 vs. 31.8 oz (1330 vs. 900g). The 24-105 has 11 aperture blades jd7. Get RF 24-105 f/4L IS unless you would really value the (semi) macro mode of the EF 24-70 f/4L IS, in which case get the EF 24-70 f/4L IS. (Once you add the EF/RF adapter, the EF 24-70 f/4L IS wouldn't really save you much, if any, size or weight, so I have ignored size and weight differences.) Since you own an R camera, I wouldn't even Canon EOS 5D Mark III Canon EOS 7D Mark II Canon EF 17-40mm f/4.0L USM Canon EF 24-70mm f/2.8L USM Canon EF 70-200mm f/2.8L USM +4 more Reply Reply with quote Reply to thread Complain The RF 24-105 f/4L IS ver­sion is on the left in each pic­ture, and the EF 24-70 f/2.8L II ver­sion is on the right. In the overview image, there are no sig­nif­i­cant dif­fer­ences at first glance except for a slight vignetting with the 24-105, and the fram­ing is also most­ly the same: Jy1So.

canon ef 24 70mm f 4l is usm vs 24 105