Amplim 256GB UHS-II SDXC SD Card. Blazing Fast Read 282MB/S (1900X). Class 10 U3 Ultra High Speed V60 UHSII Extreme Pro SD XC Memory Card. 4K 8K Professional Video 256 GB/256G TF Flash. New 2018

This card is perfect for the Panasonic GH5. Using the 400Mb/sec 4K 10bit All-I mode the card never fails. It easily fills the card every time giving the full 1 hour 24 minutes of recording. This is the only 256Gb card I know of that never fails in this mode. It is about the same price as the expensive name brand 128Gb cards, which makes it incredibly cost-effective.

One of the fastest SDXC SD cards I have used. Very happy with this purchase. This is the third AMPLIN card I’ve purchased. Only sorry I didn’t do it sooner. This card far exceeded my expectations

I have used this produce in the Costa Rician Rainforest and have had great success and performance.

Needed more space for my bird pictures.

Excellent product!

I think my headline speaks for itself. :)

Thank you, this is my second card from Amplim, very happy with this card!

No buffer problem. It's still early days but so far I'm very pleased.

Very fast, as advertised and solid. I am ordering another

So far so good.

Its only been a week and the cards have kept up with my NIkon D850 and Sony A7R3 perfectly.