[LRFlex] Re: A question for the 20D users.

Out of lurking mode for a minute. Formatting really doesn't affect this much. It's basically because the RAW files also have a jpeg embedded in them, so the file size does vary. When you insert a fresh card, it guesses the space for each shot at it's maximum typical size. Jpeg compression will make the files smaller than that in most cases, and so over time shooting on the card you actually end up with more free space, and thus more pictures (shoot a card full of nothing but a single color background and you'll tend to get even more shots). All Canon RAW files work this way, be it 10D, 20D 1DmkII, etc..

Gerald
(back to lurk mode and saving pennies for a new prism in my SL that's not green with brown spots...)

David Young wrote:
I am using a couple of 1 gig cards (Lexar Professional HS, if it matters) but get a curious anomoly.
When I put a freshly formatted card in the 20D (Raw only mode) it reports that I have 98 photos available. (49 on the 512mb card).
But, every now and again, the camera reports (and delivers!) 109 photos!
It seems to make no difference whether I format in the camera, or format on my computer/card reader and then re-format in the camera. (Formatting in the compter alone, does not create the DCIM folder that the in-camera formatting creates, and which the 20D wants.)
Has anybody else noticed this anomoly? And is 98 photos per gb normal?
Just curious....
Thanks. 
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