Will xSpeed of CF Card make noticeable difference for video?

M

M1CEtro

Active member
Hey guys,

I'm going to be working with a Canon 7D to shoot music videos. Music videos sometimes call for a lot of slow motion scenes so sometimes I will need to shoot at high frames per second and high shutter speeds. I'm researching which compact flash card to buy. I know that CF speeds effect data transfer rates to and from your computer and also affects the speed the data is written to the card. I have read that this is beneficial with shooting continuous sill images. My question is, for HD video, will I see much of a change in video quality between a card thats 30 MB/sec (x200) versus 45 MB/sec (x300) and 60 MB/sec (around x400). I'm considering getting a Sandisk 16 gig 60 MB/sec but I'm wondering if I really need to spend that extra money for a faster card? Even with slow motion shots, will I really need that 60 MB/sec power? or will I be paying for more power than I actually need?

Thanks in Advance
 
I used a Kingston 266x card for one video and recording video was just too much for this card, it wouldn't record more than a few seconds at times. I didn't have any problems at all with a 600x Lexar.
 
"...won't run into rolling shutter issues..." Just to clarify, it is the architecture of the camera, sensor and firmware, not memory card speed that causes/cures rolling shutter.
 
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