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Archive 2014 · CF size limit in 20D?

  
 
beanpkk
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p.1 #1 · p.1 #1 · CF size limit in 20D?


Is there a max size CF card that the 20D can handle? I can't seem to find my book and Canon doesn't make them available for that camera any more (too old!).

Thanks,
keith



Jul 04, 2014 at 02:18 PM
Jeff Donald
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p.1 #2 · p.1 #2 · CF size limit in 20D?


Here is a link to the instruction manual that you can download in pdf form.

http://gdlp01.c-wss.com/gds/9/0900000259/01/EOS20DIM-EN.pdf

I remember there were several firmware upgrades with regard to CF issues. The latest version is 2.0.3 and can be downloaded here:

http://www.usa.canon.com/cusa/support/professional/professional_cameras/eos_digital_slr_cameras/eos_20d#DriversAndSoftware

I used 32GB cards without any issues when I sold it in 2011.



Jul 04, 2014 at 02:38 PM
Ian.Dobinson
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p.1 #3 · p.1 #3 · CF size limit in 20D?


I'm pretty sure there is . off the top of my head I can't say for certain but I think I remember seeing 8gig mentioned at some point in the past


Jul 04, 2014 at 02:40 PM
Jeff Donald
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p.1 #4 · p.1 #4 · CF size limit in 20D?


Ah, that jogs my memory. I believe the largest the camera would format is 8GB, but it would use larger if formatted FAT 32 in a computer or another camera. I used my 1Ds MkII to format all my cards. Then the 20D had no problem with them.


Jul 04, 2014 at 02:51 PM
Andrew J
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p.1 #5 · p.1 #5 · CF size limit in 20D?


I just put a 32GB card in the 20D that was formatted in a 1DMKIV. The remaining shots counter showed 999. I formatted the 32GB card in the 20D and it now shows 880. So it seems it would have used the entire card before formatting in the 20D.


Jul 04, 2014 at 03:11 PM
beanpkk
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p.1 #6 · p.1 #6 · CF size limit in 20D?


Thanks for the responses....the reason for the question is I'm thinking of using my 20D for time-lapse. With an 8G card the top LCD indicates something like 972 exposures in Raw, and if I change it to JPEG (L) the count goes to 999 but it probably can't display any more then 3 digits. On the Info screen it says 7.4 GB available. I'll try it and see what happens!

Thanks.

Jeff Donald: I brought up the 20D manual -- thank you very much for the link.

in the manual is an interesting statement, something like "the remaining number of shots on the card depends on the capacity of the card and the ISO setting." Why on earth would it depend on the ISO? Just curious.

Thanks!!
keith



Jul 04, 2014 at 06:15 PM
Dragonfire
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p.1 #7 · p.1 #7 · CF size limit in 20D?


ISO always changes the card capacity, don't know why, just a fact.

RAW files are usually 4 X the size of LJPG.




Jul 04, 2014 at 06:21 PM
Andrew J
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p.1 #8 · p.1 #8 · CF size limit in 20D?


noise can't be compressed


Jul 04, 2014 at 06:22 PM
Jeff Donald
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p.1 #9 · p.1 #9 · CF size limit in 20D?


Building on what Andrew said. the JPEG compression algorithm can't distinguish the difference between detail in an image and high ISO noise. This similarity of noise and detail means it can't be compressed as much and the file sizes get larger as ISO increases.


Jul 04, 2014 at 06:31 PM
beanpkk
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p.1 #10 · p.1 #10 · CF size limit in 20D?


Interesting. Thanks.
k



Jul 04, 2014 at 07:04 PM





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