I have a cannon eos 7D mk 11. All was well till I changed my SD card since then it will not format I have tried another new card and it is the same. Help what am I doing wrong.
I am using a 16 gb SanDisk. No micro. I also have a compact flash 16gb Kingston ultimate266x card. It was going great till the cArd was full. Transfered to my computer put the card back in went to 're format and it will only format card two does not...
