gl2 frame mode

Discussion in 'Professional Video Production' started by Daniel Hollister, Sep 8, 2003.

  1. hi -

    first thing, if you see a similar post to this, i am sorry, but it
    didnt look like the post worked last time i tried it...

    anyway...

    i'm having some problems while filming with my gl2... i am hoping
    someone can help me out.

    i have been made aware of the fact that using the 30p frame mode on
    the gl2 reduces quality by cutting into the available resolution. i do
    like my movies to look as much like film as possible, so i usually
    leave the gl2 in a shutter speed of 1/30, so it still has the
    semi-choppy, film feel to it, without that loss of resolution. i also
    usually leave the iris open at 4 or less as to have total control over
    the focus.

    basically i have recently gotten myself a gl2, and didn't realize
    until just a couple days ago that it is not terribly great in bright
    light. i need to film a project outside that is basically in direct
    sunlight. and even with the ND filter on, it is still far too bright,
    unless i either raise the shutter speed above 1/30, and/or close the
    iris. but when i raise the shutter speed, it no longer looks filmish,
    and if i close the iris, i dont have control over focus... i need
    these things. so i figured going out and buying a few ND filters might
    do the trick, but the lens is so exposed on the settings i have, and
    the sun is so bright during these days that it doesnt really matter. i
    have the on camera ND on and 2 other ND filters on top of one another
    and it still really doesnt do a whole lot.

    so basically heres my questions:

    1) is there a way to get rid of this light, with a different filter
    or something else, without having to drastically change my exposure
    settings?

    2) if i must change my exposure settings, will putting the camera in
    frame mode be recommended, or will it lose quality?

    3) i find that if i put frame mode on and put the shutter to 1/60,
    it's fine. but how does this 1/60 look in frame mode? how does the
    look of the 1/60 differ from, say, 1/720 in frame mode? how is it even
    possible to have something like 1/720 if i am supposedly in 30p?

    thanks a lot, i look forward to your responses.

    - daniel hollister
     
    Daniel Hollister, Sep 8, 2003
    #1
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  2. Daniel,
    have you tried to use the camera in "Normal" (i.e. interlaced) mode and
    than deinterlace during postproduction ?
    This way you should be able to use much faster shutter speeds and
    still retain the film-look you wanted.
    Martin
     
    Martin Doppelbauer, Sep 9, 2003
    #2
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  3. Your absolutely spot-on Martin.
    I use DVFilm Maker from www.dvfilm.com (though there is other software
    available I'm sure) with material from my XM2 and it works a treat. In fact,
    the only way to preserve decent resolution with this particular camera is to
    keep away from frame mode as well as 16:9. Better to de-interlace and ARC
    the image in post.

    Robin,



    Robin Davies-Rollinson,
    Cymru / Wales
    www.ffilmiau-fflur.co.uk
     
    Robin Davies-Rollinson, Sep 9, 2003
    #3
  4. Shooting at 1/30th and below *will* reduce resolution and
    increase stair-stepping effects (at least in Sony cameras...) since
    one field is dropped. The image is unacceptable except for
    emergency use in very low light, to reduce gain effects. If you
    must throw away the advantages of interlacing in video for
    standard interlaced TVs (a mystery to me why anyone would
    want to, except for video displayed ONLY on computer
    monitors...), then the 30p mode would be the way to go.
    "30p" refers only to the display mode, not the shutter speed,
    BTW. You can get very strong ND filters, if needed (using
    a high shutter speed can result in "strobing", especially in
    "frame mode", which strobes even at 1/60th...).
     
    David Ruether, Sep 11, 2003
    #4
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