how does sdhc class system work?

You're mixing bits and bytes. 24mbps = megabits, which is only 3 megabytes per second. That's why a Class 4 card is enough -- class 4 can handle up to 4 megabytes per second.
 
4 megaBytes per second x 8 (bits to the Byte) = 32 megabits per second.

MB = mega Bytes per second

Mb = mega bits per second


I hope this helps.


Bob Diaz
 
The one that that makes me nervous about a 32GB is the possibility of something happening to the card and loosing data. With two 16GB it less of a chance. Unless one needs the room for continous shooting, it is not that hard to swap them out. I do a lot of photography and for my DSLR have always used smaller cards vs on big one for that reason.
 
shphotovideo said:
The one that that makes me nervous about a 32GB is the possibility of something happening to the card and loosing data. With two 16GB it less of a chance. Unless one needs the room for continous shooting, it is not that hard to swap them out. I do a lot of photography and for my DSLR have always used smaller cards vs on big one for that reason.
Click to expand...
With 4GB cards it is even safer. :-) And you can back them up onto DVDs, the whole directory structure, and it will be playable on a Blu-ray player.

On the other hand, think of those poor souls who bought a JVC or a Sony consumer camcorder with a 120GB or even a 240GB HDD. Think about dropping this one. Why people WANT camcorders with a huge non-removable HDD is beyond me.
 
Cranky said:
On the other hand, think of those poor souls who bought a JVC or a Sony consumer camcorder with a 120GB or even a 240GB HDD. Think about dropping this one. Why people WANT camcorders with a huge non-removable HDD is beyond me.
Click to expand...
Lol! Its called the wonderful world of sales and marketing,,,,, you put the word "bluray" or DVD or HDD with 240GB and 12 hours record time on a little handycam and its come in spinner!
 
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