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Beware "Class 10" designation
on April 26, 2011
I have two of these cards and bought them to use with a Canon 60D. My camera manual calls for class 6 or better. I thought I was saving money buying the transcend Class 10 for less than the SanDisk Class 6. This card is not capable of recording HD video on the 60D. It is not fast enough. After a couple seconds of shooting video the camera shows an ons creen indicator that looks like a buffer filling and ceases recording.
There is something everyone buying SD cards should know:
"Even though the class ratings are defined by a governing body, like × speed ratings, class speed ratings are quoted by the manufacturers and not verified by any independent evaluation process."
Long story made short this card is far slower than the SanDisk Extreme HD Video 16 GB SDHC Class 6 Memory Card (SDSDRX3-016G-A21). I had to demote both of these cards for use with point and shoot cameras.
Basically pay no attention to class when choosing a SD card, instead look at the read / write speeds.