Delkin DevicesPrime 128GB SDXC UHS-II Memory Card – 300MB/s Read, 250MB/s Write | Ideal for 8K, 4K, HDR, and 360º Video | High-Performance SD Card for Cameras

UPDATE: Dont buy this card to work with the GH5 high bit rates. In my wedding I had today I decided to use it as a second card for relay recording. And because I put that card in last the GH5 defaulted to start recording on this card. It is so slow. It does not keep up with V30 cards. I have a Samsung 128GB 100MB/s (U3) MicroSD EVO that is way faster. It took a considerable 5 to 10 seconds at the end of each recording for the camera to write to this card. With my Samsung cards it is maybe a second if that. Most of the time it is instant.I bought this SD card to work with my GH5's high bit rate recording as it states you need a V60 or above SD card to handle the fast data transfer. This card did not work for me. I would not recommend it to anyone looking to use this card for your GH5. It obviously can not measure up to the V60 speed it claims. Too late to send back for a refund once I found out.

I've owned this for over a month and basically this was an OK purchase.I use this card in my Rx100v camera. Technically this camera, internally, only supports UHS-I cards (and in fact, you dont even get the full possibilities of UHS-I).. so I know that this card wasn't going to increase my buffer flush rates. I got this because with the higher UHS-II read speeds (vs UHS-i counterpart), I can achieve much higher import speeds when dumping photos to my devices.So while this did make importing photos faster than the industry standard use of SanDisk UHS-I Extreme Pro cards, I discovered that these cards do not function better than the similar priced Sony Series M cards (which I use in my a99ii).Test Overview: Using test data that equals 12.7 GB with 658 Files & 30 Folders. Each file is 20MB in sizeTo perform test, I used a the same card reader (Kingston MobileLite G4) and wrote the data to a Samsung 960 Evo 1tb NVMe driveSanDisk Results:Card to PC = 77MB/s (took just over 2 mins to import)Delkin Results:Card to PC = 175MB/s (took less than 60 secs to import)Sony Series M:Card to PC = 225MB/s (took less than 50 secs to import)I was away on a vacation for the entire month of testing this card, and I would have returned it based on these results. The only thing this Delkin card has over the Sony Series M is that the Delkin offers a Life Time Warranty while Sony only offers a 5 year. However Sony has been a business for a very long time with no chance of it disappearing. Who knows if Deklin will be a company in 5 years, a life time warranty is only good if the company is around ;)As for what others have complained regarding the GH5, well clearly I can't comment on that due to my lack of owning that camera but in the Sony rx100v, I am able to unlock and utilize the 100Mbit encoding rate for the 4k or HD options (which are only unlocked when you have a valid UHS U3 or higher card).Should you get this card... up to you. A SanDisk 128gb UHS-i card is cheaper than this card, but technically slower (when using a device that can support uhs-ii speeds). A SanDisk 128gb UHS-ii card is more expensive HOWEVER Sandisk doesn't dabble with low grade UHS-ii cards, so their UHS-II cards maximize both Read & Write speeds of the UHS-ii bus.. so yeah the Sandisk is more expensive and ALOT more faster.Sony offers UHS-II cards, low end (Series M) and high end (Series G). When comparing to Series M (apples to apples) the Sony's are faster and if you grab them on sale, your paying a few bucks more. If your trying to use a UHS-I camera but want to maximize your importing process, I would recommend that you go Sony Series M.You can get 2 Series M's or 2 Delkin Prime's for the price of 1 SanDisk UHS-II Extreme or 1 Sony Series G.FYI = Delkin makes a higher end UHS-II card, they call "Power". These cards are more apples to apples when your comparing SanDisk UHS-II Extreme's or Sony Series G but I dont have access to these cards for testing.

I bought this card for use in my recently acquired Fuji X-100F. Previously I had used a couple of SanDisk cards which were reliable, but seemed slow in my X-Pro1. Thinking the performance was more due to the camera, I hoped they would perform better in the X-100F. The performance seemed the same to me, though I didn’t perform any precise tests.This 64GB Delkin is, subjectively, WAY faster than the SanDisk 32GB. It formatted instantly and write speed is noticeably much faster. I primarily shoot stills, including JPG and JPG+RAW, only occasionally shoot video; the X-100F is primarily designed as a street shooter for still photography. So I don’t know how this card performs for high end video.I have not used this card extensively yet, though I will use it as my primary card now, carrying a backup card, of course.

These are no good for 400mbps recording with Panasonic GH5 - If it's a still scene it will work but as soon as any movement is in the shot it's too much for the card and the camera stop recording and tells you the card can't handle the write speed. I'm on the latest gh5 firmware that was released in early June 2018.

Bought it for the GH5. I haven’t had the same problems that the other reviewers have had, even recording in All-I. I don’t know why others are having problems, but I do notice that those reviewers with problems bought the 128GB cards and those giving better reviews bought the 64GB cards.4 stars though because these cards are overpriced in my opinion.

High quality and trustworthy with my photo images. Highly recommended.

Camera Sony a7III. Card works good.

I bought two of these cards to use in my Panasonic GH5 camera with it's 400mbps (50MB/s) codec. One of them works perfectly, but the other one is too slow for this application, despite the card being rated at 60MB/s continuous write speed. Very disappointing for cards that cost £100+ each. I will be trying a different brand (Sony or Sandisk) to see if I can find something more reliable.

I didn't do any extensive testing but this card has worked on two shoots when used in the Fuji X-T3 recording 400Mbit video. It has a rating of V60 and it seems like it might be slightly higher at about 70-72MB/s write speed (according to the blackmagic speed test). Very pleased.

Not cheap but fast enough for photos and 150 mbps 4K home video up to 60p. I Use it for recording video with Canon XF400 and have had no problem with write speed so far. I have not tested it for higher bit rates. Also used it in Canon EOS-R camera for both photo and video and it is comfortably fast and reliable so far.

Workhorse of a card with my GH5. Although, still not strong enough for the C4K and 10bit

Works great. Overkill for my Sony A7ii which can't utilize the full speed of the card. But never the less it is working at the max for the camera. Very happy.