The Panasonic GH4 is announced!

Discussion in 'Amateur Video Production' started by David Ruether, Feb 7, 2014.

  1. The Panasonic GH4 is announced! Here are the specs:

    The video specs are particularly spectacular, making this camera
    a truly "pro" video camera for shooting everything up to 4K and
    cinema 4K resolutions, up to all-I, 4-2-2 10-bit, and with up to
    200Mbps data-rates - and it is also a VERY capable still camera,
    with 1/8000-second shutter-speed (1/250th flash synch), 200K
    duty-cycle mechanical shutter (plus silent electronic shutter),
    and a new type of fast focus-ability based on the blur
    characteristics of specific lenses (using profiles built into
    Panasonic lenses) for micro corrections of focus depending on
    lens and subject focus characteristics. It uses a new quad-core
    processor and redesigned cooling for better sustained video
    shooting and higher ISO shooting ability. It also can accept
    and power XLR mics and do other new tricks, using a rather large
    accessory unit). And, it is small and light, and can accept
    almost any lens made (with cheap adapters), including PL video
    lenses. WHEW! Bye-bye dSLRs - especially since this camera is
    considerably cheaper than other top (but less able for video)
    competing models...8^)
    David Ruether, Feb 7, 2014
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  2. Here is a preview:
    David Ruether, Feb 7, 2014
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  3. David Ruether

    Brian Guest

    Going by the specs it has an interesting rage of fps. The 2 fps could be
    useful for capturing an event that usually takes a while such as someone

    What I'm wondering is if you record at 4k when what would be file size for
    a one hour video recording? Would a class 10 memory card be fast enough to
    capture the video? Still looking on the bright side you could crop the 4K
    picture with less quality being lost and create a good quality still from a
    4K video frame.

    I wonder if at some stage in the near future if cameras will allow you to
    connect a portable 2 GB hard drive to them. You could then have the hard
    drive in your pocket while recording video. In a way it would be like going
    back to the old video cameras that had a separate recorder connected to the
    Brian, Feb 7, 2014
  4. See also:
    for an excellent review of the GH4!
    The interval can be MUCH longer...;-)
    It requires a special Panasonic "P2" SD-sized card to record at
    the highest levels - or an external HD... (and with the card, I
    seem to remember 64-gigs gets you 90-minutes - but that info is
    in the links above...).
    This was mentioned in the review above, VERY useful for weddings
    and events, especially if shot all-I at highest data-rate and
    resolution. "Bang-up" standard HD also, from down-sampled 4K
    (and also from high data-rate all-I 1920x1080)! THIS CAMERA
    LOOKS GOOD FOR VIDEO!!! 8^) Especially with all its new picture
    controls for adjusting the tonal response and with the option
    for 1:1.85 "cinema" aspect ratio. Even the slight cropping
    mentioned with that last can work well with the 7-14mm Panasonic
    lens, since its major faults are mainly in its far corners even
    wide-open at f4 (and that's constant throughout - but OK by f8-9
    even there...).
    This already exists, with the Atomos Ninja 2 ($700) 10-bit recorder
    (and the GH4 can put out 10-bit 422 to it through its HDMI port!;-), There may also be another option I will
    explore: a new 3TB drive that appears to have software with it for
    at least downloading from cards directly from Panasonic cameras
    through the USB port. The drive is cheap, but one would need the
    (likely expensive) P2 SD card to make this work - but overall likely
    under $500 total for huge capacity.


    David Ruether, Feb 7, 2014
  5. David Ruether

    Brian Guest

    There is a review on the Panasonic GH4 at this site but it says its a 16
    Megabye camera and not 4K, how is the possible?
    Brian, Feb 10, 2014
  6. David Ruether

    Brian Guest

    Brian, Feb 10, 2014
  7. Yes - and the resolution of the GH4 permits exact 1:1 Cinema-4K (with
    a slight crop of the sensor) *WITHOUT* the need for rescaling or
    interpolation to get the video resolution (the "sharpness killer"
    bane of higher-resolution sensors used for video). 'Course, the GH4's
    unusually fast processor also likely helps with obtaining its very
    sharp 4K and HD video...;-) BTW, the slight crop can help with some
    lenses that are a bit soft toward the corners at wide stops, and
    Panasonic has a set of lenses available that run down to 7mm, so
    the cropping with "C-4K" (only) is not important. Also BTW, Panasonic
    has just added a very good 42.5mm f1.2 Leitz lens to the line, and
    other makers offer f0.95 lenses for MFT for those into speed and
    shallow DOF (of which I am not one...;-).
    David Ruether, Feb 10, 2014
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