Why I mirror
SD Cards do fail. If I was only shooting with one card, I would have lost the photos of the day. See this link if you want to mirror your cards in your 7D2 or 5DM4.
SD Cards do fail. If I was only shooting with one card, I would have lost the photos of the day. See this link if you want to mirror your cards in your 7D2 or 5DM4.