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I bought this SD card at Walmart mistaking it for the SanDisk Extreme Pro , the one sd card everyone uses on the Canon 70D, and well, I'm wondering if its campitable with the camera?
Yes, you can, but you'll need an adapter because micro-SD is smaller than a regular SD-card.
Yes you can use a 64GB Micro SD Card, because the Maximum supported storage on the 70D is 64GB, you will need to use a micro SD card adapter in order to fit the card within the camera, speed will be no different to using an equivalent SD Card.
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