Delkin Devices 256GB Cinema CFast 2.0 Memory Card (DDCFST560256)

Purchased the card Nov 2017 for Canon 1DxM2, popped it in the camera and it was very slow (2mb/sec write speed), did a deep format as suggested by Delkin - see Delkin support website - Consumer_Notice_1.10.17 and now its up to nearly 200mb/sec (over USB3 with the Delkin card reader).. Used it for about a month, did a format in camera, was shooting and again, became very slow... Did another deep format and its back up to speed. Seems that when the card needs to rewrite over previously used cells, it gets very slow, but when it has freshly formatted cells to write to, it is extremely fast.. Now I'm doing a deep format when the card fills up (takes about 8 minutes)...

I put this card through total hell this past weekend. 4 Dance recitals. 80 dance routines. 18,407 frames shot on a Canon 1DX Mk II. This thing kept up at 14fps for as long as held down the shutter button. The write speeds were incredibly fast and the card performed with perfect reliability and no errors. Initially the camera did not recognize the card, whereas most cards I've used to this point have been immediately picked up. A simple in-camera format in the DX2 and the Delkin 256 CFast 2.0 was ready to fly. Great value, great card,I did originally purchase the Computer Bay version, but I had repeated card read fails DURING operation which of course would seize my shooting ability until I removed the card and re-inserted and rebooted the camera. Shame because the other CFast cards I have from Computer Bay have been rock solid. It may be a fault between the KB cards and Canon similar to the San Disk CFast 2.0 cards when they first came out.Rest assured that after a hell of a test run, the Delkin CFast 2.0 performed exceptionally well. I'll be buying more from this company!

Invested in this card, because I needed an additional CFast 2.0 card to the three that came with my camera purchase. I was capturing video during an 8 hour day and was uncertain the amount of card space I would need. Since I wasn't recording non-stop, four cards calculated to be enough space when recording in 1080p. I purchased this card on September 4, 2017 and yesterday, October, 13 the card failed (image that). I discovered the issue today, October 14 when I started the transfer of files. Fortunately, I was able to do a disc repair on this unit and salvage 1/4 of the files that were captured. Not nearly enough of the content, but enough to make something then nothing. I could have done a better job in recording dual cards simultaneously versus one card at one time to insure the most secure capture.Since this card purchase was a last minute decision, I turned to Amazon Prime and this card was the most economical CFast 2.0 on the list. The scores and reviews were high enough to justify the more economical card purchase.The three additional cards that were supplied with the purchase of my camera were SanDisk Extreme Pro 128GB. Those cards were slightly used at the time of purchase and I've had no issues to date. I'm now looking at Lexar's 128GB Professional 3600x CFast 2.0 cards as they come with a downloadable recovery software in the event of a failure. I've not used this before, but it sounds like an added layer of protection.

So far so good. Used on a canon c300mkii

Purchased this for the Canon 1DX Mark II, shot a wedding over 3 days and some 4K video. I had it set to write to both CFast and CFlash for redundancy. It worked flawlessly and Read/Write speeds are very fast. Good bang for the buck compared to the other brands. We will see how this holds up over time but extremely happy with the purchase

I thought this card might be a good option for my Canon XC15 as the Lexar professional 256gb are still in the ~$650 range. The card worked great for about a month, now I'm having write issues to the card. It works for about 5-10 seconds, the camera stops recording telling me "the recording has stopped due to insufficient write speeds of the card". Odd thing is, it does not always do this. Sometimes it records fine, allowing me to record extended time periods. Think I'll just bit the bullet and get the Lexar.

I have four of these, for video on a 1dx Mark II. This year (2020 as of now, from original purchase date in 2017)— two have corrupted... I began tossing them in the trash. What's surprising is two failed relatively closed together. I Would expect around 2-3 year use life out of these.... Honestly, for the cost— they were a good run for the money at the time. Now I purchase the SP Cinema Pro model listed here on Amazon.I think when you're shooting anything besides Lexar and Sandisk... this is kinda to be expected. Is what it is.

Using in Canon 1dx2....Card works great. 4K 60fps no problem.Eventually, the card slows down drastically.This is fixed by deep formatting the card on CPU.Quick format/low level on camera won't do.

These work great for 4K video at 60 FPS. I've been using two of these for 1.5 years without problems, in all kinds of weather...

Not Good Quality card

Spot on