Using An SD Card In The Canon 5DMkIII Brings The Camera’s Speed To Its Knees

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Relax -- don't do it. Photo illustration Jeff Cable

Got a super-fast Canon 5D MkIII? Love that you can just pop out the SD card and slide it straight into your Retina iPad via the camera connection kit? Not so fast – literally. Photographer Jeff Cable has done the math and found that the camera’s SD slot is slow, slow slow compared the the CF slot, and then it actually gets worse.