When SD cards turn bad

Here’s a conundrum… A Canon 5D Mark III says “card 2 cannot be read” regarding a Lexar Professional 128 GB 400x SD card. Yet I can put the card into an HP notebook computer and read it or format it (exFAT). I put it into a Sony A6000 and the camera was unhappy about it (“please reinsert card”). Can the card truly be bad if the Windows machine is able to read/format it? I haven’t had a bad SD card before.

Separately, if I do have to replace this card, what’s the best price/performance for a 128 GB SD card that is occasionally used for HD video capture?

Philip Greenspun’s Weblog

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