Pentax DSLRs Require Fast Cards for A Bit Longer Video Recording!

Otherwise, it will end pre-maturely, within one minute! >:-(I have a Sandisk Class 4 SDHC card in 8GB, which is normally used in my NEX. I record so many videos with my NEX without any problem and in any lengths, since I bought them back to July.This weekend, I just swapped the Sandisk card into my K-x for use for some reasons. I was recording videos and suddenly found that the video recording