Help! Weird issue with my 20d

Discussion in 'Digital Photography' started by Dean Hummel, Aug 15, 2006.

  1. Dean Hummel

    Dean Hummel Guest

    Hello,

    I recently bought a used 20d. Takes great pictures, but there's 3
    weird issues with the camera..

    1) When you take pictures with it, sometimes the shots remaining starts
    to blink. If you shut the camera off it still blinks the shots
    remaining.

    2) It has some weird USB behaviour. A Mac will not recognize it at all.
    Windows XP, 2000 and NT will see a USB device, but identifies it as a
    "DCP device". Yes, I tried it in PTP, and Normal mode. What's even more
    interesting is what happens under Linux: when I hook the camera up to
    my Linux box, I see the following in /var/log/messages:


    usb 1-3: new device strings: Mfr=1, Product=2, SerialNumber=0
    usb 1-3: Product: DCP CONNECT
    usb 1-3: Manufacturer: Canon Inc.

    and it is not mounted,

    My friend's 20D gets mounted as a removable drive.

    usb 1-3: new device strings: Mfr=1, Product=2, SerialNumber=0
    usb 1-3: Product: Canon Digital Camera
    usb 1-3: Manufacturer: Canon Inc.


    3) Finally, on one occasion it displayed "BUSY" when you try to use it.
    It seems re-seating the CF card fixed that.

    Both cameras have firmware 2.0.3 (as does mine), both are using a 2G
    Sandisk Ultra II
    card.

    I spoke to Canon today about this. They claim "DCP" is a "service mode"
    for the camera that is used when technicians service the equipment.
    This matches what the seller said that the camera was serviced prior to
    selling.

    Canon claims that only a technician can "undo" this setting, so I have
    to send it in.

    Has anyone on the list encountered this problem and is there a way to
    reset the camera to normal operation?

    Dean
     
    Dean Hummel, Aug 15, 2006
    #1
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  2. Dean Hummel

    Jay Beckman Guest

    "Dean Hummel" <> wrote in message
    news:...
    >
    >
    > Hello,
    >
    > I recently bought a used 20d. Takes great pictures, but there's 3
    > weird issues with the camera..
    >
    > 1) When you take pictures with it, sometimes the shots remaining starts
    > to blink. If you shut the camera off it still blinks the shots
    > remaining.
    >


    Sorry, can't help with the connectivity issues but as far as the blinking
    display goes, simply turn the camera off, remove the battery, count to five,
    reinsert the battery, power on and go.

    Jay
     
    Jay Beckman, Aug 15, 2006
    #2
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  3. Dean Hummel

    Jim Townsend Guest

    Dean Hummel wrote:

    > 2) It has some weird USB behaviour. A Mac will not recognize it at all.
    > Windows XP, 2000 and NT will see a USB device, but identifies it as a
    > "DCP device". Yes, I tried it in PTP, and Normal mode. What's even more
    > interesting is what happens under Linux: when I hook the camera up to
    > my Linux box, I see the following in /var/log/messages:
    >
    >
    > usb 1-3: new device strings: Mfr=1, Product=2, SerialNumber=0
    > usb 1-3: Product: DCP CONNECT
    > usb 1-3: Manufacturer: Canon Inc.
    >
    > and it is not mounted,
    >
    > My friend's 20D gets mounted as a removable drive.
    >
    > usb 1-3: new device strings: Mfr=1, Product=2, SerialNumber=0
    > usb 1-3: Product: Canon Digital Camera
    > usb 1-3: Manufacturer: Canon Inc.



    Canon cameras don't support USB mass storage. As a result they CAN'T
    be mounted as a removable drive.

    They're protocol driven. This means there must be a set of commands
    exchanged between the camera and the computer it's connected to in order
    to list the images on the media and to copy or delete them.

    Windows XP (and its kin) give the *appearance* that the camera is mounted
    by providing an explorer window and showing the image icons. This
    is actually slight-of-hand.

    Windows is communicating with the camera using the Picture Transfer Protocol
    command set. It only appears to be a drive. Note that you can't checkdisk
    and/or format like you could with a true mounted drive.

    With Linux you need to run a utility like gphoto2 http://www.gphoto.org/

    This provides the command set required for the computer to communicate with a
    non mountable camera. A GUI front end for gphoto2, like GTkam provides an
    interface similar to what you see in windows. http://www.gphoto.org/proj/gtkam/

    I run Linux and find the best way to manage files is to use a USB compact
    flash card reader. They CAN be mounted like a drive. They only cost 20 bucks :)

    Most modern Linux distros will automount a flash card reader when it's plugged
    in and open a window for you. (Mandriva linux has done this for several
    years now).
     
    Jim Townsend, Aug 15, 2006
    #3
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