I picked up a 5D4 and 5DSR over the weekend and bought a couple of 32Gb Sandisk Extreme, 120MB/s UDMA cards to go with them. When I tried to download the files via a card reader they were corrupted, basically large blotches of colours and stripes all over the screen in Lightroom and Photoshop.
I then tried to download them direct from the camera and it worked fine. Very strange. Any ideas as to what is going on? The card reader works perfectly with files from my 5D2 and 1D4 and it also worked fine when I put a smaller 4GB card in the 5D4 and downloaded the files using the card reader.
My laptop is a 6 year old Macbook Air
Hope someone can educate me on this.
Cheers



