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Sony Fs7 Owners Manual

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    D. Preparing the camera and shooting
    ISO can be a little more confusing. ISO is used to 
    determine the correct exposure for a camera when using 
    an external light meter. As different gamma curves require 
    slightly different exposure levels the optimum ISO (native 
    sensitivity) will vary depending on the gamma curve used.
    STD Gamma curves = 800 ISO = 0dB
    Hypergamma HG1, HG2, HG3, HG4 = 800 ISO = 0dB
    Hypergamma HG7, HG8 = 1600 ISO = 0dB
    S-Log2 and S-Log3 = 2000 ISO = 0dB
    If you double the ISO, for example going from 800 ISO to 
    1600 ISO this is the same as adding 6dB of gain. So if you 
    are using STD gamma and the camera is set to 1600 ISO 
    that is the same as STD gamma at +6dB gain.
    I recommend that to avoid confusion when in custom 
    mode you should use dB gain rather than ISO. 
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    D. Preparing the camera and shooting
    D3.2 To select the use of gain or ISO 
    (MENU: Camera – ISO/Gain/EI – Mode). 
    Manual gain control is then done via the gain switch on 
    the side of the camera body the gain or ISO level assigned 
    to each of the 3 switch positions can be set in: 
    (MENU: Camera – ISO/Gain/EI – ISO/Gain) etc.
    To enable/disable automatic gain control press the  
    Gain button on the camera body.
    If using the Cine EI mode please see the section on 
    “Exposure Index”. 
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    D. Preparing the camera and shooting
    D4. White Balance (Custom Mode) 
    Setting the white balance correctly ensures that white 
    objects in the scene appear white and that the overall 
    color response of the camera is true to life. There are 
    several ways of setting the white balance.
    Pressing the white balance button on the camera will 
    toggle between automatic white balance (ATW) and  
    the white balance function selected by the white  
    balance switch.
    ATW: The camera can determine the correct white balance 
    automatically by continuously analyzing the scene being 
    shot and adjusting the white balance while you shoot. 
    This function is called ATW – Auto Tracing White Balance. 
    Generally this works well but under some situations you 
    may occasionally see a shift in colors while shooting.
    With the white balance switch you can chose between 
    PRESET white balance and MEMORY A and MEMORY B 
    white balance. 
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    D. Preparing the camera and shooting
    D4 .1  Preset
    The white balance can be fixed to a set value. When the 
    white balance switch is set to PRESET the preset value 
    is used. To change the preset value go (MENU: Paint – 
    Preset White) and select the desired color temperature.
    D4.2 Memory Mode A and B
    There are two memories in the camera that will remember 
    the white value for a white target. To set the white balance 
    correctly aim the camera at a white target such as a piece 
    of white paper that is under the same lighting as the rest 
    of the scene. Expose correctly and then press the WB SET 
    button on the front of the camera. This will store the white 
    balance in the memory selected by the switch.
    D5.  White Balance (Cine El Mode) 
    When shooting using the Cine EI mode a white balance 
    preset is selected using the white balance switch. Only 3 
    possible settings can be chosen, (Preset) 3200K, (A) 4300K, 
    (B) 5500K. Choose the option closest to the scene you are 
    shooting. Preset white balance is used to preserve the 
    full dynamic range of the camera, fine tuning of the white 
    balance would be done in post production as part of the 
    normal grading process. 
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    D. Preparing the camera and shooting
    D6. Exposure, Zebras, Waveform and Histogram
    Exposure is controlled through a combination of shutter 
    speed, gain/ISO, iris aperture and ND filter. The camera 
    includes a number of tools for measuring exposure.
    D6 .1  Zebras
    Zebras are commonly used to measure the brightness of 
    either skin tones or highlights. Zebra 1 is designed to be 
    used for skin tones. (MENU: VF – Zebra). For STD gammas 
    the default level of 70% works well in most cases, a small 
    amount of zebras appearing across a face. However for 
    the Hypergammas the zebra level should be reduced to 
    60% for good results.
    Zebra1 at 70% on skin tones with STD gamma (note how darker faces 
    may not always show zebras at 70%). 
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    D. Preparing the camera and shooting
    In (MENU: VF – Zebra - Select) you can choose whether to 
    show zebra 1, zebra 2 or both in the viewfinder. The zebras 
    can be turned on and off via the push button on the side 
    of the viewfinder or with (MENU: VF – Zebra – Setting).
    In Cine EI when a MLUT is enabled for the Viewfinder the  zebras measure the exposure levels of the MLUT as seen on the viewfinders LCD screen, not the S-Log2 or S-Log3 recording level. 
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    D. Preparing the camera and shooting
    D6.2 Waveform Vectorscope and Histogram
    These are selected via  (MENU: VF  – Video Signal Monitor).
    Waveform: The waveform display measures the 
    brightness of the recorded image and displays the 
    brightness levels on a vertical scale that goes from 0% 
    or black at the lower dotted line at the bottom to 109% 
    (clipping point) at the top. There are additional dotted 
    reference lines at 25, 50 75 and 100%. The left side of the 
    waveform meter represents the left side of the image 
    being recorded while the right side of the waveform meter 
    is the right side of the image.
    The Waveform Monitor and the levels indicated 
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    D. Preparing the camera and shooting
    Vector: This is a vectorscope which is used to measure the 
    color levels and color hue of what is being shot. In most 
    cases it is not necessary to use the vectorscope.
    Histogram: The histogram displays the exposure 
    brightness on a horizontal scale where black is at the 
    left and 109% (clipping point) is on the right. The vertical 
    height of the indicated level represents the amount of the 
    image that is exposed at that brightness. 
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    D. Preparing the camera and shooting
    Video Signal Monitor Source: When shooting in the   
    Cine EI mode it is possible to select whether the video 
    signal monitor displays the levels of the recorded signal 
    or the level of any LUT being used. Please refer to the 
    Cine EI section of this guide to better understand which to 
    use. The selected source signal is indicated just above the 
    signal monitor. 
    (MENU: VF – Video Signal Monitor – Source).
    The histogram 
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    D. Preparing the camera and shooting
    D7.  Aper ture/Iris
    D 7.1  In Custom Mode the iris of an electronically controlled 
    lens can be controlled automatically or manually. In the 
    Cine EI mode only manual operation is possible.
    In Custom mode pressing assignable button 2 (iris) 
    toggles between manual and automatic control. When 
    manual control is selected the Iris Push Auto button can 
    be used to momentarily set the iris automatically. When 
    using auto iris it is possible to include an offset to the 
    exposure to brighten or darken the image, for example to 
    brighten a backlit scene via 
    (MENU: Camera – Auto Exposure – Level).
    D7. 2  Custom and Cine EI modes 
    The iris can be opened and closed using the iris control 
    wheel on the side of the camera or by assigning iris 
    control to the assignable dial on the handgrip 
    (MENU: System – Assignable Dial).  
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