05-27-2020 01:10 PM
My 6D has been working fine until recently. Then a Sandisk 128GB SDXC card I had been using for a year stopped working. OK, card fail that's fine. I bought it on vacation, so it might be a fake or of questionalble origin.
I continued using my 6D with a Sandisk 200GB SDXC card. It worked normally for a month or two, and then today the camera said it couldn't read the card. I had left the camera turned on for a week or more and the battery was low. I changed the battery but the card was still unavailable to the camera. I pulled the card, and Lightroom could read it fine. Put the card back in the 6D, tried to format it, and it failed. I couldn't do a low level format becase the controls were frozen while the camera was trying to access the card. And after the format failure Lightroom couldn't read it any more.
I tried an older Sandisk 32GB SDHC card that has never let me down, and the camera reported that it couldn't be read as well. So now I had three dead Sandisk cards of various sizes, speeds, origins...
My PC couldn't access the cards to reformat them, so I can't even try to update the camera's firmware (it's two versions behind) because the 6D can't read SD cards.
Last ditch effort - I pulled out my 6DMKII, and while it was not able to do a quick format, it could do low level formats on the two SDXC cards. The SDHC card is still dead.
So now I can use the biggest two of the three cards in the 6D, but can I trust my 6D anymore? Will a firmware update address this problem specifically? There's nothing in the notes to indicate that it will. Could the camera's SD card contacts inside be dirty and not communicating with the cards properly? Are there SD slot cleaning tools available?
I should mention that these are micro SD and I'm using two different adapters, all with the same results, so I don't think it's an adapter problem.
Solved! Go to Solution.
05-27-2020 01:35 PM
It is an adaptor problem. Period.
The micro-SD cards with adapters are not recommended for use in Canon DSLRs. If you use a full size card, all of these issues will go away.
05-27-2020 01:56 PM - edited 05-27-2020 02:01 PM
Can you guarantee that? In writing? It took my cameras 250,000 photos to finally realize that I've been using adapters, and it chose this moment to teach me this lesson?
05-27-2020 02:13 PM - edited 05-27-2020 02:15 PM
Since Wadizzle is not a Canon employee, his (very valid) advice is not guaranteed. (I almost said, "not worth much")
Adapters and micro cards are bad, period. As you can see they can choose any moment to cause an issue.
05-27-2020 02:28 PM
First and foremost, Micro-SD cards are not one and the same as SDHC/SDXC cards
Finally, Canon does not recommend them for use in their DSLRs.
Do you see Micro-SD below? All that I see is SDHC and SDXC.
06-01-2020 03:16 PM
Sometimes, even what appears to be a full-size SD card can give you the same kind of grief that a Micro SD card and adapter can.
These pictures still crack me up! Thanks, Ray-uk.
06-02-2020 10:15 AM
You came asking for a solution to a problem. You received the correct answer.
"It is an adaptor problem. Period.
The micro-SD cards with adapters are not recommended for use in Canon DSLRs. If you use a full size card, all of these issues will go away."
"Can you guarantee that? In writing?"
Really? You received it for free and now need to decide whether you want to accept it.
06-02-2020 02:03 PM
06-02-2020 02:18 PM - edited 06-02-2020 02:20 PM
This is the absolute answer: Send your camera to our Factory Service Center to be evaluated. If they determine your camera is in working order, it's not a camera problem. It's a card problem.
You can set up the repair from within your My Canon Account at canon.us/account
You can learn about the different maintenance options HERE.
If you're not in the USA, you'll need to contact Canon in your country for service options. Click HERE to find the contact information.