C200: ERASED SD CARD content

Alvise Tedesco

Alvise Tedesco

Well-known member
Shot C200 4KHD MP4 at 25p, today.
Switched SD slot (A to B) when I had 5 min left on card A.
After a while I wanted to review a clip (slot B), so I switched to "media". It appeared the msg: "SD card A: Recommend checking data and initializing". That card wont mount now on 3 different MBP ("The disk you inserted was not readable by this computer"). And cannot be accessed anymore by the camera (Neither slot. Same "Recommend checking data and initializing" msg).
Before switching from slot A to slot B, I had switched from "camera" to "media" more than twice. All the clips were there.


Card were Lexar SDXC u3 64GB 1000x.
I had frequent "Buffer overflow: Recording has been stopped" msg from the camera. This obviously isn't a good sign to begin with, but I needed to shoot and I was far from different SD cards availability.
I'm told by the rental that those cards are listed as supported. I suspect they'r not, I have yet to check. But media DISAPPEARED AFTER BEING RECORDED. This is a different story.
Any idea?
Anyone can pass this to Canon USA. I'll talk with Canon Italy/EU
Thanks
 
I don't have any good advise to help with your current predicament, but in the future I would independently verify that the cards you're using are in-fact approved by Canon. I believe there are some others on here that have posted about running into the "buffer overrun" problem, but I don't know if they lost any footage.

Hopefully it was not something critical that can't be re-shot. There are data reclamation services out there, but they can be pricey AND that's not a good sign that the camera isn't able to read the card anymore.

Good luck.
 
Thanks.
I can't find a list of approved cards. Can someone point me at it if such thing exists?
With 2 different data recovery apps, I found the full list of MP4. For each MP4 file I can see exact length as when shot.
Every file now apparently weight 524,3KB.
Can't believe I have to re-shoot

Camera erased all 128 clip without notice
 
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Alvise Tedesco said:
Card were Lexar SDXC u3 64GB 1000x.
I had frequent "Buffer overflow: Recording has been stopped" msg from the camera. This obviously isn't a good sign to begin with, but I needed to shoot and I was far from different SD cards availability.
I'm told by the rental that those cards are listed as supported. I suspect they'r not, I have yet to check. But media DISAPPEARED AFTER BEING RECORDED. This is a different story.
Any idea?
Click to expand...

I had "Buffer Overflow" errors with different Lexar cards. For C200 stay away from Lexar and go with SanDisk. Since I started using SanDisk, it's worked perfectly. Canon has a rather obscure page where they say what they've tested. Almost none of the cards they've tested are actually available to buy anymore. But, they haven't tested any Lexar cards, and they have tested SanDisk. So while they don't expressly say all SanDisk cards are approved, the C200 does seem to work well with SanDisk. For an oddly picky camera, Canon really needs to do more testing.

You may be able to recover the lost footage with a Disk Recovery Utility as MP4 is a non-proprietary format. I've used Data Rescue before.
 
brettsherman said:
I had "Buffer Overflow" errors with different Lexar cards. For C200 stay away from Lexar and go with SanDisk. Since I started using SanDisk, it's worked perfectly. Canon has a rather obscure page where they say what they've tested. Almost none of the cards they've tested are actually available to buy anymore. But, they haven't tested any Lexar cards, and they have tested SanDisk. So while they don't expressly say all SanDisk cards are approved, the C200 does seem to work well with SanDisk. For an oddly picky camera, Canon really needs to do more testing.

You may be able to recover the lost footage with a Disk Recovery Utility as MP4 is a non-proprietary format. I've used Data Rescue before.
Click to expand...

Thanks


brettsherman said:
https://support.usa.canon.com/kb/in...earch&viewlocale=en_US&searchid=1504367524788
Click to expand...


Thanks again. But where I can see this is about the C200?
 
I have had zero problems using 64GB Transcend SDXC cards from my C100 on the C200. Not on the list but I just shot a big YouTube project and shot for a week with ten of them, not a problem or glitch.
 
I was recording at the 150mb/second MP4 rate yesterday and had my first 'buffer overflow' type error with my Transcend 128GB cards. I'm going to use dual 256GB Sandisk Extreme Pro cards from now on. This will cover multi-hour events as well as save me in the event of a card error (I hope). I've had a couple incidents with transcend cards, usually at the 'formatting' stage and reseating them has fixed that but overall they've been quite solid. These are now a few years old so maybe it's time to replace them with Sandisk...
 
I ran into the same thing (buffer overrun) with the Transcend cards I posted about above soon after I posted that. I retired them from the C200 (still use them in my 80D for stills and video and they work fine). I bought the approved Sandisk 256GB cards and they have worked well since the Transcend fiasco.
 
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