Dumb ass question

fracster

fracster

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I have a new camera on its way that has video mode. Yes I know, I said I never would, but hey, it comes with this new body so I may as well use it.

Now, it has twin card slots, one CF and one SD. I have loads of CF cards, but no SD cards.Now I think I want the stills on CF and the video on the SD. What class of SD card do I need to record video properly.

I know diddly about video, so answers in simple, idiot proof terms please.

Thanks.
 
I think class 10 (& check the write speed/transfer. they go from quite low 4MB/s > 95 MB/s
 
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Yeah class 10, highest speed that seems good value I'd say.
There are nerds on t'internet actually testing the read speeds of these things if you search enough.

I do love the idea of a camera with both slot types, wish mine had that.
 
Ok, so class 10 is the way forward then.

Thanks for the replies.
 
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60D manual says Class 6 SD cards. I can't imagine the new camera would be any more demanding.
 
Most people selling SD cards talk about the read speed, but the critical aspect is the write speed. This is usually considerably slower than the read speed. For smooth video, your camera really needs to be able to output to the card at a fast enough rate, so if you're creating 1080p clips you should really be looking at Class 10. 720p is probably okay onto a Class 6. Class 4 is to be avoided.

Depending on bitrate clips being created (or particularly variable bitrate), you may possibly get away with 1080p onto a Class 6 from a decent manufacturer - Sandisk, for example - but there are a lot of fake copies of these out there. Recommend buying from a reputable source to be sure. A card that can't keep up with the stream is worthless.
 
SimonH said:
For smooth video, your camera really needs to be able to output to the card at a fast enough rate
Click to expand...

1080p is 2.1 MP per frame. At 50fps that works out to be 105MP per second. Use three bytes per pixel and you're looking at moving 315MB per second. And that's before compression.

That's probably why Canon say in the manual for the 60D that Class 6 will be fast enough.
 
2000 Martyn.............:D

Thought I would try a Sandisk Extreme HD Video SDHC 32GB Class 10 .

Thanks for the help all.
 
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