Pro video blog…Produced by Philip Johnston DoP/Editor


I can’t stress enough the importance of using the correct cards for the job. Only tonight I had a timely reminder the difference between true class 6 and class 5.5 !  I was filming a local Cub and Scout group using a Sony EX-3 and decided to use 2 8GB cards…One Transend Class 6 and the other a Panasonic Class 6.

Filming in 1920 x 1080 I had 28 mins per card the 1st being the Transend. Seven thirty PM the Scouts barge in and I am swapping slots, the second card (Panasonic) kicks in and all seemed well till I got a “restore media warning” I decided to switch off the camcorder and when it came back on I was asked to “restore media” with a choice to cancel or execute, so I decided to execute.

Everything seemed well till this happened again, I went through the same process and took a decision to swap out the MxM card holder with the Panasonic SDHC card for an 8GB SxS card, I only had this card and a 16Gig Transend which I was saving for another job.

I have tried a 16GB Verbatum Class 6 and an 8GB Panasonic class 6 in the MxM card holder, both gave me trouble in fact the Verbatum was a non starter.

SDHC_HDVIDEO_1_L.JPGThe moral of the story is if you are using the Sony EX-1 or 3 and you intend to use the MxM card holders you must stick to a brand that you know is truly class 6 like the Transend SDHC card. Transend also produce a specific video SDHC Class 6 card which I have also tested and works fine. Do not be confused by the times given on front of the card this is for domestic customers.


Having been working in the video business since 1988 I have amassed a great amount of knowledge of both the kit and production values over the last 30 years.

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