Sony M Series SDXC UHS-II Card 64GB, V60, CL10, U3, Max R277MB/S, W150MB/S (SF-M64/T2), Black

You really have no choice if you are using the Z7. This Memory Card works perfectly, is well made, fast and easy to handle. It takes a special USB reader to connect to your computer. So the entire package is a bit expensive. But considering the investment in camera equipment and the value of getting the shot, its really not that big of an expense.

To be honest, I purchased this SD card after more research than probably necessary. It works great with my Sony A7iii and is priced right.

Excellent read speed in UHS-II mode. I benchmarked the card in several UHS-II readers and the highest benchmark was 269.0 MB/s in the Lexar Professional Workflow SR2 UHS-II. Write speed reached 99 MB/s in several card readers as well. This is a good card for those looking to improve their workflow with fast downloads. Its write speed is not much above what you can find in other UHS-I cards (Such as the SanDisk Extreme Pro 95MB/s UHS-I card), but the real improvement is the download speed. Sequential Read : 268.969 MB/s Sequential Write : 99.091 MB/s Random Read 512KB : 200.910 MB/s Random Write 512KB : 0.871 MB/s Random Read 4KB (QD=1) : 12.092 MB/s [ 2952.1 IOPS] Random Write 4KB (QD=1) : 2.624 MB/s [ 640.7 IOPS] Random Read 4KB (QD=32) : 14.369 MB/s [ 3508.1 IOPS] Random Write 4KB (QD=32) : 2.904 MB/s [ 709.0 IOPS]

So I recently purchased two 64GB cards. According to Sonys recall notice, if your card does not have an * in the back, then it is affected. Of the two cards I purchased, one has the * and the other does not. Like the comments of another user on this page, Sony may be overwhelmed by calls and due to the COVID-19 situation, replacement will be staggered. In my case, it will cost me to ship the card out of my country and I will have to pay customs duty when the replacement gets here which ultimately is costing me more for shipment than the actual cost of the card. TBH, I have done some 4k tests shots on the affected card and it works fine so I am not sure if this is a potential risk or an inevitable risk. Only time will tell.

Perfecta funciono adecuadamente a mi cámara

Good price point and Im able to record 4k video using the EOS R camera. Was worried that the read rate would not be enough but seems to be just fine.

The 64 gig size of card seems to be a good size for weekend trips. It too early to know what there durability will be.

Good

Very good

Worked as expected! Cant wait for these things to go down in price!