Delkin Devices 1TB Power CFexpress Type B Memory Card (DCFX1-1TB)

Update September 2022 - I've been using this card for 18 months now. Got a new Z9 in January 2022 and have over 260,000 shots on it with this card on that body alone - combined with the roughly 150,000 on my Z7II - that's easily over 400,000 pics and still no issues with this card - love it.Update October 2021 - I used this card all spring/summer for baseball images - shot over 120,000 photos over 65 baseball games this summer and the card worked great for me on my Z7II - no issue at all at this point - very happy.original review: I recently bought this for my Nikon Z7 II camera - the 1 tb card allows for 11,300 RAW files (or 121,000 basic .jpg files!!) - so I never, ever worry about running out of memory. I typically shoot baseball photos and can easily shoot 4,000 RAW shots over the course of 4-5 hours. Files transfer very fast to my MacBook using the Sony XQD/CFE card reader.

I purchased the 1 TB CFexpress card through Amazon, and after seeing the packaging and card label both indicated that the Write Speed of the card is 1430 MB/S, I reached out to Amazon support for a replacement. The replacement card arrived 24 hours later (Nicely done Amazon!!!), but the packaging and the card label also had the 1430 MB/S write speed. So I called Delkin support to see what is going on.Delkin support indicated that the labels on this batch of the 1 TB cards were incorrect, and indeed the write speed of the 1 TB CFexpress card was as advertised, and would reach a top speed of 1540 MB/S. Support offered to cross-ship a replacement card right away, with 48-hour shipping. But they also confirmed that that the speed difference was just a cosmetic/labeling mistake, and the card performance was as advertised. I was initially "OK" keeping the card as I did a short test with my Canon EOS R5, doing a 10 minute 8K video recording and approximately 1,000 electronic-shutter photos at 20 FPS, and the card behaved well and without errors; photos and videos appeared to be fine.Delkin Support rep however asked which camera I was using, and after learning it was a Canon EOS R5, the rep recommended getting the replacement because he said there is a firmware update for the 1 TB card that was necessary. They shipped the card, and I expect to get it soon. At that point, I'll get a chance to give this card a workout and update my review. But for now, 3-stars because there is a mislabeled product that is being advertised/shipped, in need of firmware to work properly with the Canon EOS R5. I am not sure why Amazon & Delkin just address this and hopefully save this headache for others.I will say, I enjoyed dealing with Delkin support, their quick acknowledgment of the issue and the turnaround, and probing question about my camera that will hopefully get me the card that will work with my camera.

This card rocks! No trouble with continuous burst in a 1DX III! As long as you keep your ISO below 3200 you can shoot 16FPS till it's full! Also has no problem recording till full at 5.5k RAW 60!My original card had a firmware bug that caused issue with video (camera would error out saying the card was too slow) - Delkin, true to their word, sent a replacement working card in 2 days! Then, when that one was slower for continuous burst, they sent another! Each time I emailed I had a response in under 20 minutes. Crazy good support! I'll be a returning customer for sure!

1TB card arrived with label claiming 1430MBs maximum write speed, but Amazon photo and description claimed 1540MBs write speed. Before opening the package, I wrote Delkin Devices a description of the issue. Within 48 hours I had a new card delivered to my house with a return prepaid shipping envelope for the return. I corresponded with an actual US based employee who handled the case. Very impressive service and a very impressive CFExpress memory card.

I bought this card so I could shoot wildlife videos at 4k120fps for a whole trip without having to change cards. It works great for that mission, and it also reads at high speed to bring the video back to a PC. I'm sold on the card, and I'll be getting another one for my other camera.