I purchased this for a 2nd SDXC UHS-2 card for my Canon R5. Works great for RAW photos at 20 fps and for 4k 24fps video. I haven’t tested shooting RAW or 4K HQ mode video using this card as I believe you would need a V90 card or CFexpress Card Type B card

I bought a couple of these cards in the 64 GB version in early summer 2019 for use in my (then) new Sony A7III and I have another used in my Sony A7RII. Cumulatively, the cards have around 30,000 snaps with no problems of any kind.Though (or maybe because) I don’t do the sort of photography that requires me shoots RAW bursts, I’ve never had a problem with the card’s read and write speeds. After reading several reviews here complaining about the card’s read/write speed, I decided to test it myself. I did notice that the data on the card only gives read speed as 250 MB/sec, write isn’t mentioned.I’m working with a system where all the other components are much faster than the card, making it the limiting factor.A couple or reviewers here said they think the write speed is around 45MB/sec and that agrees what I found when writing to the card both with the camera and with a data file from my computer. I shot RAW burst in continuous hi mode from my 42 MP A7RII until the buffer filled with 904 MB (22 41.4MB) raw files. The buffer cleared in 22 seconds. I also transferred at 5.7 gig file to the card from a very fast M.1 NVME through a USB 3.2 type C connection to a high speed reader and came up with 45 MB/sec almost on the nose. You can conclude that as far as write is concerned, 45MB/sec is all this card has.I also tested the read using the same rig as above in reverse and came up with 230 MB/sec. That’s pretty close to advertised.So, the card is a slow write, so what? I’ve been shooting these cards for years and it hasn’t bothered me a bit. But my type of shooting never needs for me to shoot 22 shots in a couple of seconds followed up with more. But some people do. If you’re a sports shooter, waiting 22 seconds for the buffer to clear so you can shoot more could be catastrophe.If you shoot portrait, street shooting, landscape, walking around a museum, you won’t give a flip about 45 meg/sec write, won’t ever even notice it. But if you shoot action—-.As for me, I’m gonna buy another Lexar.BTW, don’t think I’ve ever bought anything that’s as fast as advertised. Earlier today, I was doing some backup to remote drives and managed to get a SanDisk SSD advertised at 1050 MB/second to write around 700 MB. The files were originating with a M.2 NVME on the PCie bus feeding through a USB C gen 3.2. I didn’t time it but it made short work of a 65 gig file.TomD

Fastest sd card for the price point, very reliable too.

These Lexar SD cards were purchased to use in my daughter’s Canon EOS 6D Mark II for photographing equestrian events. Some of her other cards have had speed/responsiveness issues, which prevented the camera from taking photos quickly enough – which is a serious problem when you have a horse cantering down centerline or riding through a 10-meter circle.- There is a definite improvement in the 6D’s responsiveness with these cards, especially during continuous shooting.- Upload/download speeds have not been tested, but they are improved over her previous/older cards.- Card size allows 1000+ photos stored, even with Large JPG and RAW selected.- Video recordings are good at Full-HD and should still be acceptable with her next dream camera [Canon EOS R6 Mark II], which records at 4K. If you are recording at 8K, you’ll want to bump up to a V90 SD card.

los he usado durante un par de años en una canon r6, siempre han funcionado bien, en todos los formatos, ya sea foto con rafajas en formato raw, o en video 4k 60fps clog3. funcionan perfecto