Quote Originally Posted by HDNitehawk View Post
The 5D IV may gain on the weather sealing, but with the small battery I would bet it is still gimped on speed and tracking vs the 1 series bodies.
I would totally agree with your assumption here but (I think?) the MKIV would beat the 5DS R. You know, however, 99% of my images are from my setup in the yard and they are mostly static so I suspect any of these camera bodies would more than suffice. I will certainly post some bird images from the 5DMKIV and the 5DS R in the near future