I have two SDSDB-8192 cards which have “class 4” on the sticker.
I noticed my camera giving an error with video, and even image storing taking longer.
On putting each of them in a PC, I noticed that the read performance is closer to 1MB/s instead of the expected 4MB/s on BOTH cards. .
I verified that PC setup properly detects read performance of 4MB/s from both the HP L2531A that was in the camera and a Kingston 2GB microsd.
I purchased these from a major retailer. Is there a chance that these could be fakes?
Is there an official way to verify these cards are performing to their labelled specification?