I've used a lot of different SD cards and these Sony cards really are perfect for the price. I've used this in my cameras with a CF adapter and haven't had any problems. Read/write speeds aren't exactly 70Mbps, but they're good enough for any SLR setup. I haven't made any videos with it so YMMV with it. I know that video requires quite a lot of bandwidth. The only "problem" I had with this card is the "lock" switch. When inserted into the CF adapter it sometimes turns on the lock switch and I don't realize it until I try to take a picture. Then I have to turn off the camera and reconfigure everything. some kind of pain I just put a piece of tape on the switch to hold it in place and it hasn't been an issue since. It reminds me of old floppy disks. Overall highly recommended.
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