1DX+128GB+64GB buffer/write issues

[jaayres20]

I have a 1XD and mostly shoot weddings. During a wedding I had a Lexar Professional 128GB 800x card and a SanDisk 64GB Extreme Pro 90mbs. I was shooting RAW to the Lexar and JPEG to the SanDisk. About 2000 pictures into the day I went to review a series of images I had just taken and could not because the camera was busy writing to the cards. I do not spray and pray so I was confused as to what was happening. The buffer never did clear and I took the risk of trying to shut the camera off. Next a spinning graphic along with the message that the camera was still trying to write 14 files to the cards came up on the LCD screen. I let it be for about 5 minutes and then felt that I had to move on with the day and wasn't really willing to stop using my 1DX. I took the battery out and put it back in and was able to review the images and sure enough I had lost the 14 pictures it was trying to write. It wasn't a huge deal because I had already retaken them with my 5D3. I was able to take pictures again but I noticed that the red buffer light stayed on continuously. I found out that the 64GB card was causing the issue so I swapped it out and continued without any issues. My question is that do you thing the issues was with the camera or card(s). I feel like I shouldn't have these issues with expensive cameras and nicer, newer cards. However I know that crap happens.

 

[Menace]

You are right that it shouldn't happen - couple of possibilities come to mined: faulty card or 1Dx not liking two different branded cards for some reason.

Have you managed to replicate the issue since the wedding shoot?

 

[Jim Saunders]

IIRC there is another recent thread about a Sandisk card packing it in; The signs it gave were similar to yours.

Jim

 

[jaayres20]

You are right that it shouldn't happen - couple of possibilities come to mined: faulty card or 1Dx not liking two different branded cards for some reason.

Have you managed to replicate the issue since the wedding shoot?

Not yet. The only times I have had issues with cards they have been SanDisk. Could be a coincidence but I am thinking about only using Lexar cards now.

 

[jaayres20]

So I had this issue repeat with the same card so I was thinking it is a card issue. I am sending it back to SanDisk for a replacement. However, I was at a wedding last Saturday evening with a Lexar Professional 128GB card in one slot and a Lexar Professional 32GB card in the other slot. I had the the same issue where the buffer could not or would not clear. I shut the camera off and took out the battery. When I turned everything back on I had obviously lost the images still writing to the buffer but I could shoot again but the buffer light continued to stay on. I kept shooting for a little bit and noticed the cameras was slower to write to the cards and the buffer continued to stay on. It was like it was busy doing something and if I pushed it too much it would freeze up on me. I decided to swap out cameras and use my 5D3 for the rest of the reception (which is so slow in comparison to the 1DX). After I copied my cards to the computer I formated them and put them back in the camera and the buffer returned to normal. I even shot an engagement session with no problems. I either have 3 bad professional grade CF cards or something is wrong with my 1DX. Any thoughts?