Wraz z wprowadzeniem na rynek tego modelu aparatu przestały się z nim komunikować lub komunikują się nie tak jak powinny modele obiektywów marki Samyang z serii XP oraz AF RF.

https://community.usa.canon.com/t5/E...t/true#M100918

Hi, I have an EOS RP and have been using a Samyang XP 85mm f1.2 manual focus lens with an EF mount with no problems using an original Canon EF to RF adapter. I recently bought an R6 mark ii and when using this same adapter and lens, the place where the aperture is displayed disappears and taking a picture leads to a black screen that does not go away even when turning the camera off. If I take the lens and adapter as they are and use them on the RP, they work again. Other lenses work fine on the R6mii so I don't think the pins are damaged (plus it is brand new).

I have tried turning on the Release shutter w/o lens and turning the stabilization off with no success.

Any help would be well received.
https://community.usa.canon.com/t5/E...t/true#M102556

I have replaced my EOS R by and R6MarkII. With the Samyang AF 14mm RF the camera freezes and one must remove the battery to restart it. I upgraded the firmware from 1.0.0 to 1.1.2. The canera now does not lock up with the Samyang, but is not able to read the AF/MF switch nor the F-stop value.

I bought the Samyang because there was no 14 mm option from Canon at the time, but this was clearly a mistake!
Skoro takie problemy występują z pojedynczym modelem obiektywu z danej serii, to zapewne również występują z pozostałymi modelami obiektywów z danej serii.