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My camera shows 1.8GB only, I am using 2Gb SD card

I have a canon SD1100 is & I use 2GB sandisk SD card but it shows the available memory as 1.8GB only. I know that it will utilize some space but almost 200 mb is wasted. what's the reason?

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Is 2GB what you think it is?

In reply to: My camera shows 1.8GB only, I am using 2Gb SD card

Is 2GB 2 billion bytes or is it something else?

The same issue and question is asked of hard disks. The conversion from BILLION BYTES to GIGABYTES is where I find the answer.

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That and

In reply to: Is 2GB what you think it is?

Besides that 1024:1 ratio for bytes:megabytes, you will lose some space because the camera has to format card. Looks like you get a 10% hit.

All you really have to worry about is how many images the card can hold. Even though my DSLR will hold over 900 images a a 4 Gig card, I get them off the card as soon as possible. If you are relying on that card to store all your memories, you are just waiting for a disaster to happen. As long as it will hold enough for your day's shoot or your vacation, that is all that is important. If you need more storage, buy more cards. I always carry a spare or two just in case of a failure.

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