
I've learned my lesson: don't try the product until the return period is closed. I originally ordered them for an upcoming big shoot but they arrived the day after the shoot so I threw them in my camera bag. I just went to the park to photograph native migratory birds and set my Canon 80D to RAW and JPEG. The very first time I shot in burst mode, the card couldn't handle the buffering and froze. I saw the message "Recording... please wait" on my screen. Unbelievable. Luckily I had another brand so I had the cards in my pocket. So the lesson is: don't buy these cards. They may have a 256GB capacity, but the buffering speed is a joke and they can't handle large photos in burst mode. Kind of makes them useless to me. I spent $40 and waited a long time to try them and now I can't return them. Maybe I'll try them as music storage so I don't feel so bad.

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