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07/08/2005 08:17:39 PM · #1 |
| I recently used the compact flash card from my Canon 20D in my wife's Canon A75. Now I find files labeled, for example, 189.ctg, 190.ctg, etc on the CF card. I probably should just delete them but not being sure want to ask here first anyone who might know for sure. Thanks for the help. |
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07/08/2005 08:21:52 PM · #2 |
Your camera should have an option to format the CF card.
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07/08/2005 08:24:24 PM · #3 |
| I take it that it's a mistake, then, to pop the card from one model camera into another, even if from the same manufacturer? (Thanks for the reply). |
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07/08/2005 08:26:30 PM · #4 |
Its not a mistake, I do it all the time between my 300D and G2. Just format in the camera you are using before you use it :)
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07/08/2005 08:28:17 PM · #5 |
Thanks you guys.... this thread may die, now :o)
Message edited by author 2005-07-08 20:28:29. |
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07/08/2005 08:31:49 PM · #6 |
| I had Fujifilm 128 MB flash cards with stuck files and I was not able to format them.( they are in the trash now) |
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07/08/2005 08:35:49 PM · #7 |
| Oh, I hope that doesn't happen. This is a SanDisk 1 gig UltraII. We'll see. |
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07/08/2005 10:27:09 PM · #8 |
Originally posted by Konador:
Its not a mistake, I do it all the time between my 300D and G2. Just format in the camera you are using before you use it :) |
I switch cards between the 20d and G3 and don't format or even delete photos between. Nothing's happened so far, is something supposed to happen that I should be reformatting? I do reformat every time I empty my card, but it's mostly for the 20d. |
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07/09/2005 12:01:28 AM · #9 |
Originally posted by mk:
Originally posted by Konador:
Its not a mistake, I do it all the time between my 300D and G2. Just format in the camera you are using before you use it :) |
I switch cards between the 20d and G3 and don't format or even delete photos between. Nothing's happened so far, is something supposed to happen that I should be reformatting? I do reformat every time I empty my card, but it's mostly for the 20d. |
You don't need to format, but I would make sure you erase the files before switching, or one camera can pick up the sequence (image number) from the other camera (believe it or not!) |
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07/09/2005 04:22:24 AM · #10 |
I wouldn't get into the habit of formatting more often than you need to, bear in mind cf cards (and all flash-style media) have a limited number of write cycles, and when you format you write to the entire card rather than just clearing a small part of the FAT table, and so are reducing the card's lifetime dramatically.
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07/09/2005 04:25:54 AM · #11 |
| i switch my card btwn d70 and d1h all the time and its all good, no formatting, ill shoot with one pop it out and shoot with the other switch back and its all fine. |
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07/09/2005 07:57:24 AM · #12 |
Originally posted by riot:
I wouldn't get into the habit of formatting more often than you need to, bear in mind cf cards (and all flash-style media) have a limited number of write cycles, and when you format you write to the entire card rather than just clearing a small part of the FAT table, and so are reducing the card's lifetime dramatically. |
This is not entirely true. Let me explain. Yes, for what it seems that CF cards have sa lifetime of a number of cicles, and probably your cameras will all be dead log time before your cards began to die.
And even if that was a problem what most cameras do (at least my D70) is that they don't erase the card when you format it. They pile the information in a corner of it or starts to save the new files at the other end that is empty. that's why when I do "format" in my camera, it only takes about 2 seconds to format it. If is only relocating the memory or remarking the way to start wirtting again. It is impossible that 1 GB CF card takes 2 seconds erasing it as you might undestand. And that why there are a few programs that allows you to recover data from cards after you accidentaly format them some even after several fromatings. Because if you don't need to use the space in the card it isn't fisically erased.
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07/09/2005 01:36:47 PM · #13 |
Originally posted by Nuno:
Originally posted by riot:
I wouldn't get into the habit of formatting more often than you need to, bear in mind cf cards (and all flash-style media) have a limited number of write cycles, and when you format you write to the entire card rather than just clearing a small part of the FAT table, and so are reducing the card's lifetime dramatically. |
This is not entirely true. Let me explain. Yes, for what it seems that CF cards have sa lifetime of a number of cicles, and probably your cameras will all be dead log time before your cards began to die.
And even if that was a problem what most cameras do (at least my D70) is that they don't erase the card when you format it. They pile the information in a corner of it or starts to save the new files at the other end that is empty. that's why when I do "format" in my camera, it only takes about 2 seconds to format it. If is only relocating the memory or remarking the way to start wirtting again. It is impossible that 1 GB CF card takes 2 seconds erasing it as you might undestand. And that why there are a few programs that allows you to recover data from cards after you accidentaly format them some even after several fromatings. Because if you don't need to use the space in the card it isn't fisically erased. |
Indeed, it depends how the camera / pc "formats" the card. Most cf cards have a formatting sector that tells it how to quickly rebuild the FAT table to factory standard, without rewriting anything but the table. Some cameras however and windows (i THINK, not sure) do it the hard way recreating the file structure themselves, which can often involve wiping the entire card.
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07/09/2005 01:41:06 PM · #14 |
I have a 1Gb Lexar 40x CF card that suddenly stopped holding all the pics it should...I shoot in RAW, and the LCD on the cam said it should hold 162 pics, but it would stop between 80-83 every time I would shoot. I formatted it several times in the camera, to no avail. I finally got in touch with Lexar (thanks to di53) and we formatted the card through my computer, twice...to no avail. This card was only purchased in February, so we were lost as to what could be wrong. So the Lexar rep send me a RMA and I sent the card back to them. I'm currently awaiting it's return or replacement. I guess occasionally we get a bad one. Just my luck. ;)
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07/09/2005 01:59:13 PM · #15 |
Soory just going by what i have been told but....
The number on the camera only approximates the space left on the card for pictures.
If you look at the actual file size of individual raw files you will see that they change quite a bit. (For me the last shoot i did the file sizes ranged from 5384kb to 9077kb) depends on how the camera can compress them.
Have you ever gotten the full 162? If you have then your card may be the problem. if you havent its kinda like gas mileage on cars "YOUR MILEAGE MAY VARY" depending on driving conditions. A pic of the lens cap can be a very small file.
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07/09/2005 02:00:30 PM · #16 |
Yes, I mentioned that it suddenly stopped holding all the pics it should...it used to go all the way to around the 162 mark. There was definitely a card problem. :o)
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