Few questions about Canon XL2

Discussion in 'Professional Video Production' started by Reza, Jun 7, 2006.

  1. Reza

    Reza Guest

    Perhaps you noticed that I am new to digital video. Your suggestions
    are being so helpful to me. I have few more questions about Canon XL-2.

    I would greatly appreciate your advice.
    (1) How do I increase or decrease aperature size to control depth of
    field? Is it IRIS?
    (2) What should be normal shutter speed for 50 frame and 25 frame
    mode shooting ?( I have PAL version of XL2).
    (3) In what situations I need to lock the exposure?
    (4) In what situations I need to use AE shift ?
    (5) If I shoot in 50 frame and capture the video in 25 frame mode
    (adobe premier pro will not capture in 50 frame mode), will I loose
    video quality?
    (6) In what frame mode (50, 25) most of the documentary vidoes are

    (7) In what situtations I may need to use gain?

    (8) Why manual focus is preferred to auto focus by the pros? If I use
    manual focus, don't I need to keep on adjusting focus during the
    recording as my subjects walk or change position?

    Thank you
    Reza, Jun 7, 2006
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  2. Yes, it is "iris".
    Note that people most frequently use neutral-density
    ("ND") filters over the front of the lens to reduce the
    amount of light so you can open the iris while maintaining
    the proper exposure for the video.
    I would need a really good reason to not use the camera's
    For artistic reasons where your shot moves between
    bright and dark (or vice-versa). Where you want to hold
    the exposure for the dark area, but allow the bright area
    to "blow out" because it is not important (or vice-versa)
    etc. etc. Likely many other examples.
    I'm not familiar with the "AE shift" on your camera.
    Nothing beats "playing" with it when you don't need to
    shoot critical video.
    Not clear why you would want to do that?
    I would need a really good reason to not use the camera's
    Usually in cases where you don't have enough light for
    "normal" exposure.
    Because "auto" focus doesn't know what the critical thing
    is to focus on.
    Good luck, you will need it.
    Richard Crowley, Jun 7, 2006
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  3. I have Cannon XL2, and GL1, both excellent cameras. If you really want
    to get artistic you can play around with the settings and find out what
    each one will do, or read up on the manual, it's very detailed. There
    are also hundreds of links out there giving lots of information on
    these cameras. They are both popular and excellent to work with. I have
    been shooting wedding video with them for years and have nothing but
    praise for them. Let's see if they come out with a XL-3 or GL-3. I
    would suggest if you are starting out to set the camera on semi-auto
    mode because this way the camera will show you what it thinks is best
    but you can always over ride it's default, and see who is better at the
    settings you or the camera. Just a little advice form a wedding
    videographer that loves his Cannon. http://advancedvideo.50webs.com
    advancedvideo, Jun 7, 2006
  4. Reza

    Bill Guest

    A typical situation might be if you wish to keep an object on the far
    left side of the screen in sharp focus while following activity in the
    centre of the screen. Or your subject may be in the middle of several
    objects that are closer or further away: set the focus to the subject
    and lock it, so you don't see the focus going in and out while trying to
    find it.

    Or... if you have a brightly lit area that is not in the exact centre of
    your image, it may "hijack" the focus from your subject.

    If someone is walking towards you, unless you are really good at manual
    focus, you might prefer to leave it on auto. Not sure about the Canon,
    but the Sony VX2000 generally handles that pretty well.

    That said, I find the view screen on the VX2000 is not always sharp
    enough for this purpose.
    Bill, Jun 13, 2006
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