8GB CF card for 20D

Discussion in 'Canon EOS' started by hyon_hall, Jan 3, 2006.

  1. Does anyone know if the card is compatible with 20D
    Seagate 8 GB CompactFlash for $207
  2. It seems Canon isn't fond of stating the maximum card size their cameras can take; they are fond of saying they can use cards 2 GB and larger (the manual says so, as does the Technical Report in the Canon Camera Museum), but I don't believe I've seen an official statement of what the upper limit is.
    It can definitely use 4 GB cards; Rob Galbraith's database shows the performance results of several 4 GB cards in the 20D. I would be surprised if it couldn't use 8 GB cards as well.
    That said, there are arguments for and against using one large card as opposed to a number of smaller cards. If you have multiple cards and one of them goes bad (or you realize you just deleted an image that you'd like to undelete), you put that card aside until you can attempt recovery, and put another card in so you can keep shooting. You can't do that if you have only one card. If you drop off your card at the local photo lab to have them make prints, you don't have to wait for that card to come back if you have multiple cards. Of course, in favour of one large card is convenience; you can take a heck of a lot of pictures on an 8 GB card before you have to pause and swap cards.
  3. 8gb would handle something like 2500 jpegs or 400-500 raw + jpeg. That seems like an overwhelming number of images to have to deal with from a workflow perpective.

    I also agree with Steve about not putting all your eggs in one basket. If that single card is either lost or defective, you'd be mighty disappointed.
  4. Canon 20D is FAT32 COMPLIANCE. I believe FAT32 support up to 16 terabytes of storage. So, your camera is compatible with Compact Flash 500GB if there is one.
  5. I would no sooner use an 8GB CF card than I would show up for an assignment with just one body and one flash and no backup. Eight one-GB cards are better than that 8GB monster.
  6. It seems to me that the link points to an 8 GB microdrive, not Compact Flash
  7. Can't seem to find the speed specs of these cards.
  8. I found this:

    Compact Flash Speeds
    Speed Kbytes/s Mbytes/s
    1 150 0.15
    4 600 0.6
    12 1800 1.8
    24 3600 3.6
    40 6000 6
    60 9000 9
    80 12000 12


    Be carefull, a sandisk ultra II has a write speed of approx 9mb/sec, the segate has 3.6mb/sec. Not sure of your 20d but my 5d requires the speeds of the ultra II.
  9. Rubbish. The 5D will work just fine with anything from the slowest card to the fastest. You won't even see the difference unless you shoot 70 frame JPEG bursts or 17 frame bursts of RAW images.
  10. "You won't even see the difference unless you shoot 70 frame JPEG bursts or 17 frame bursts of RAW images"

    And what's wrong with having this ability. Why not buy a card which doesn't restrict your camera. Even if you use this feature once a year.
  11. ....my 5d requires the speeds of the ultra II...
    No, it does not.
  12. "70 frame JPEG bursts or 17 frame bursts of RAW images"

    We already ascertaind the above, so your following comment is redundant.

    "....my 5d requires the speeds of the ultra II...
    No, it does not."

    You are right otherwise for every day shooting.
  13. Chris,
    FYI, I have a Canon 1D Mark II and does 40f/sec on my Hitachi 6GB 3.6mb/sec and I am sure that my 1D Mark II is much faster than 5D. So, please don't said that 5D required speed of scandisk ultra II.
  14. "Canon 1D Mark II and does 40f/sec on my Hitachi 6GB 3.6mb/sec" ?

    Kelvin, this is incorrect, your camera does 8.5 fps for up to 40 frames (at JPEG Large).

    These specs are for the internal camera buffer, if your compact flash is slow it will take longer to empty the buffer to the compact flash card.
  15. "The buffer of the Canon EOS 5D is huge, some 60 JPEG images of the best quality fit, or 17 RAW photos. During buffering the images are written on the memory card at the same time so the main storage memory is used efficiently. And the DIGIC II processor of course is definitely doing good service here. The use of a speedy card, like the SanDisk Extreme III is highly recommendable. It empties the buffer completely in less than 30 seconds. When shooting in JPEG you can fill up a 1GB card completely with 3 frames per second without having to wait in the meantime. This is an impressive performance! In RAW you will have to wait after 20 images but still then you can carry on shooting with 1 image per second."

  16. Chris, that what i mean up to 40 frame continously. So, why do you need a Ultra Scandisk II or III? Are you making a movie out of your camera?

    You are being rediculous with your reasoning stating that only Ultra II is fast enuff for 5D. With a buffer like that, any CF/MD is fast enuff for 5D as long as you don't try to make a movie out of it.
  17. This thread has ended up sounding like a school boy conversation. Sorry Hyon. Kelvin, the infomation is out there do what you like with your camera. My experience with my camera has been the speed of the cf makes a difference. I took photos of our newborns at quick sucssesion and found the camera had to pause even with the ultra 2.
  18. Thanks for all the info and opinions.
    At around $26 a gig, I'll try it.
    I'll post info about the write speed, when I get it.
  19. Anyone know how much faster (if any) the microdrive CF cards drain the camera battery as compared to the flash memory CF cards? The prices on some of the microdrive variants are pretty cheap lately...wouldn't mind taking the splash if my battery isn't going to die in 8 minutes.
  20. Fish.<BR>
    check out the Power section.<BR>
    Some useful info about speed.<BR>
    Hitachi microdrive's speed is not that bad.<BR>
  21. I have power drain data here:


    Microdrives draw 5x to 10x more current during operation (say 50mA vs 300mA). They also draw more current when on standby (20mA vs 200uA).

    However, that being said, I haven't noticed any significant difference in battery life when using a microdrive. I think they operate for such short times and the rest of the camera draws so much more power that they don't affect battery life much.

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