Author Topic: Canon 5D Mark III / 5D3 / Firmware 1.2.3  (Read 1051738 times)

Luther

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Re: Canon 5D Mark III / 5D3 / Firmware 1.2.3
« Reply #1600 on: October 28, 2019, 01:28:19 PM »
Is this card defective or am I using the wrong settings?

Had the same issue with Komputerbay 64GB 1000x. Solved by properly formating in a UDMA-7 capable reader (with USB 3.0). You can also try to low-level format inside the camera, might work.
If this doesn't work, I would assume you probably have a broken card.

Hydrazine

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Re: Canon 5D Mark III / 5D3 / Firmware 1.2.3
« Reply #1601 on: November 01, 2019, 02:12:11 PM »
Tried formatting multiple times, using both ExFAT and FAT32. Similar results each time. Low level format in camera doesn't help unfortunately. Strangely, in crystaldiskmark, the benchmark results are significantly higher, (read and write 65-70MB/s) but still not to spec. I suspect a compatibility issue with the controller is making the 5D3 not use UDMA 7 and instead some slower mode. In any case, it's going back!