Got finally my 5D4, starting to do some trials.
The 17-40 mm is equivalent to the 10-22 mm on the 70D......on photo.
When I switch to video 4Kp25, then the 17 mm in photo is equivalent to a 28mm in video. It is if I'd put the 17-40 on an APS-C camera, a 1.6 zoom factor.
Is this right or I have done something wrong on the settings?
Well, I missed that but the likelihood of using EF lenses and price is a must. In the end it is not not a real problem for me shooting wildlife, just need a wider lens for occasional use. Image is great and filing as AppleProres does not increase the size of the files that much.