02-13-2017, 03:48 PM
Hum... EPhotozine.com has tested this lens - also on 5DSR and it looks a lot better in their evaluation for some reason (but still pretty unexciting around 3/4 into the range). Just FYI.
https://www.ephotozine.com/article/canon-ef-24-105mm-f-4-is-ii-usm-lens-review--30572
https://www.ephotozine.com/article/canon-ef-24-105mm-f-4-is-ii-usm-lens-review--30572