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Old Feb 9, 2005, 7:39 AM   #1
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20D owners. How many Kb. show on your CF card after formating (in camera) and before you begin shooting ??
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Old Feb 9, 2005, 7:55 AM   #2
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Sandisk Ultra II1 gig 964 This what you looking for Seti?
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Old Feb 9, 2005, 8:12 AM   #3
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Flash cards 'managed' their free space - you can never get the full card capacity but they are hold in reserve for bad blocks (either in manufacturing of through regular use)...

On a microdrive you get the entire capacity of the card (ie 1G = 1G, and not less) when you do a format - check some older postings on this subject
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Old Feb 9, 2005, 8:54 AM   #4
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Meaningful subject titles, please.

You posted this same question with the same title on two forums.

Yes, I am a curious cat, twice. First, out of pure curiosity, second, curious to see if really was the same question twice. Many people with CF cards who might be able to answer your question are not so curious.

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Old Feb 9, 2005, 9:04 AM   #5
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MONITO-

Different levels of response on different forums. Obviously you understand, if you picked this up.
I look for the most diversified answers and then draw my conclusion. I do not use forums vicariously.

This is a legitimate followup from a recent CF malfunction that was quite costly in terms of customer images. I also posted that on THREE forums.

You might consider less criticism - what goes around........

Jon F.

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Old Feb 9, 2005, 11:37 AM   #6
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You may take it as criticism if you wish. I was laughing at myself as much as anything else for being such a curious cat. Additionally, I was suggesting that a title that mentioned Compact Flash cards would be more likely to get people with interest and experience with compact flash cards. Hope you find what you are looking for. As far as my cards go, it is a few MB less than the nominal amount, but that is to be expected since the file system consumes some space.
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Old Feb 9, 2005, 11:10 PM   #7
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Setiprime

It's more than the file system consuming space otherwise a CF card would format to the same capacity as a microdrive of equal size... since the two file systems should be the same!

FYI - http://www.samsung.com/Products/Semi...o/app_nand.pdf
Check section 2 (page 8 onward) on invalid blocks management, and especially section 2.3 on wear leveling - Theses operations are performed on a regular basis so that no any single block of flash can wear out faster than other by repetitious erase/write cycles -> for example the FAT table that is constantly updated with every pictures taken... The IDE internal controller built-into each CF card 'manage' theses tasks by keeping several memory blocks held in reserve :G
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Old Feb 10, 2005, 9:51 AM   #8
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NHL- Thanks for the link. A bit technically intensive but helpful.

My primary concern is one of generalities. I outlined my CF failure and corrupt file problem on an earlier thread.


1) New camera (20D)
2) Two firmware upgrades (current 1.10)
3) using software (ACDSee 6.0) to trans from CF to computer - via "copy to..' command
4) fairly new version of CF (SanDisk Ultra III)
5) previous excellent performance of Ultra II and earlier versions
6) 0 problems with old (4X) Lexar 1Gb. cards

Most of my shooting is for non-repeatable occasions = Horse competitions.

My trusty old 300D has NEVER had a malfunction either from camera or CF card.

Thanks again - Jon F.
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Old Feb 10, 2005, 10:51 AM   #9
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FYI - One of my 40x WA CF card format only to 792M once in a while (I try to use this card last!) :?
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Old Feb 10, 2005, 1:09 PM   #10
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This seems to be a little discussed subject - unless you have an incident like mine.

Itappears that digital brings along its own version of "it didn't rewind - no film in camera - etc, etc.
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