Canon 1D Mark II N - SD card will not format.Bought used through B&H as a faster shutter speed for outdoor sports. I have tried to manually format the card and it appears to be fine. I have tried the card in my 5D Mark IV body, and it was functional....
Quick Follow up - Would the CF II card have any limitations to be aware of? For example, the SD is limited to 2GB. Would the CF card be size-limited, or would there be a conflict with write speed compatibilities?