Delkin Devices 128GB POWER CFexpress Type B Memory Card (DCFX1-128)

I needed one more CFexpress card for my Canon EOS 1D X Mark III as I like to have 4 available to use (2-in camera and 2 back-up/spare). While I have seen the Delkin name around, I've not used them before. After looking into the company and their products, I took the jump and ordered one.VERY glad I did!Well...... at first I was a little put-off. The description for this card shows the READ SPEED as 1730MB/s and the WRITE SPEED as 1540MB/s which is blazing fast.However, the card I received (see photo) shows the READ as 1600MB/s and the WRITE as 600MB/s. While the 1600MB/s isn't a deal killer on its own, the 600MB/s is. My Canon 1D X Mark III requires a card capable of VERY fast write speeds and the 600 would have killed the deal.Somewhat disappointed, I called DELKIN, and nearly immediately was speaking to a live human here in the US. I don't recall his name, but he was in Technical Service and was extremely helpful. He explained that the cards were in fact 1730/1540 however the labels were ordered with the error in speeds but still made their way to customers.Satisfied, I took the card and placed it in my camera and did a few test shots - all seemed fine. Then for my next photo assignment, I dual wrote to my 2 cards as a safeguard in case there was an issue with the Delkin (I would recommend this to anyone using either a new brand of card or on a new platform). The card performed flawlessly.On my next assignment, confident in the card and its capabilities, went to a single card write and the card again was bulletproof. As far as the speed? Well, I did a few 35-50 shot bursts with ZERO buffering (at 16fps - frames per second). That would have choked a 600MB/s card... Then I went full monty and shot a ~100 pic burst in Live View Mode which is 20fps and again had ZERO buffer.By the way - I ONLY shoot RAW and each RAW file is around 20MB so a 20frames/second on 600 MB card would choke up after 3-5 seconds and kill the buffer. I was never throttled nor did my buffer ever drop below 99... 99 is the default number for the buffer on this camera - but the "real number" is closer to 1,000 frames.All that to say - this is an exceptional piece of kit. Well made. Reliable. Affordable.

Cheaper than at other online stores and my local camera shop. Works well and is heavy-duty for my Lumix S1R Mirrorless Camera. Fast recording to memory card and has a lifetime guarantee for failure with 24-hour replacement.

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.

This is the second one of these I’ve ordered. It’s a very fast card and has never let me down. Seems very reliable.I was surprised that I started noticing signs of wear on it after only a year and a half. But I’m an extremely active photographer/videographer so maybe that’s why. It’s been working fine but I’ve noticed my Canon red indicator light flashing every 10-20 seconds and when I researched it, someone suggested that the memory card was starting to fail.I went ahead and got a new one just to be safe and not risk losing my work. Also could have worn our faster than expected due to the amount of video I shoot as well. I’m still very happy with the card and will order them in the future.

Good card, very fast.

I use these cards in my R5 and they seem to work really well. I have no issues with speed. I love the capacity and the price.

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!