5dmkIV or 5ds

[Rado]

I don't have any of the new TS-E lenses Canon released in the past two years or so but the older TS-E lenses work just fine on the EOS R with the adapter, including shift.

[Jann Lipka]

For myself -
I have 17TS " glued" to  5Ds

The larger pixel count  make it possible to effectivly crop
the image down  to 24 mm view  ...

( i found  my older 24 TS less sharp then 17 TS )
Of course 17 TS is extremely flare prone .

So with 50 Mpixel  5DS  is doing the job of both 17 ( most of the time too wide )
and 24 ...
( doing some hotel work with it  meaning I cannot make anything without 17 ...)

[guido]

Only 'huge' for the tiny number of people using shift lenses.
The list of supported lenses is pretty clear on Canon's site.

Please provide the link to this statement. I can't find it and they even plug the capability of the drop in filter adapter with the TS-E 17 (and EF 11-24 f4)  lens.

https://www.usa.canon.com/internet/portal/us/home/products/details/cameras/eos-dslr-and-mirrorless-cameras/mirrorless/eos-r

[Mary K]

I have the EOS R, and regularly use the 24mm, 50mm and 90mm TS-E lenses on the camera with no issues. In fact the focus guide on the EOS R makes them a pleasure to use, especially when using the tilt function. I’m loving the R, and am very much looking forward to the high pixel version when it comes out.

[Rhossydd]

Please provide the link to this statement.

https://www.canon.co.uk/mount-adapters-ef-eos-r/

[guido]

https://www.canon.co.uk/mount-adapters-ef-eos-r/

That is marketing fluff, not a specific compatibility list...

[Gigi]

Slightly off topic, but...
If one were shooting with an older 7D, but enjoying the crop sensor (as a birder wanting the longer effective lens length), would anyone venture a guess if the 5DIV (after cropping) would be better than the 7D2? I think probably yes, nod to the newer sensor, just wondering if anyone had any insights. Thanks.