Blackmagicdesign ATEM - Page 98

Using ATEM Television StudioProSwitchers
Shutter
The shutter button is labelled SHUT and is used to select the desired shutter speed or
shutter angle. Press the shutter button to cycle through the available shutter settings.
Auto Focus
By pressing the auto focus button, you can set the selected camera to automatically
focus the image and maintain sharpness. To use this function, the selected camera
must have a compatible lens with built in electronic auto focus control, and the auto
focus feature enabled on the lens.
White Balance
The white balance button is labeled ‘w/bal’, and this feature lets you adjust the white
balance on a selected camera. Press the white balance button to cycle through the
available white balance settings and set the correct color temperature.
Iris
Rotate the iris knob clockwise or counterclockwise to open or close the lens aperture
on compatible lenses.
Focus
Rotate the focus knob clockwise or counterclockwise to adjust the focus when using
compatible lenses.
Zoom
Rotate the zoom knob clockwise or counterclockwise to zoom in and out when using
compatible zoom lenses.
Controlling Color
The primary color button lets you the select primary color correction feature so you can make
color adjustments to the lift, gamma, and gain tonal ranges using the trackball.
Before we look at the different ways you can control color, it’s important to look at the three
tonal ranges that form a video image.
Lift
Lift controls the shadows, or the darkest ranges of the image. For example, the color
and brightness, or luminance, of the black level.
TIP Your camera may have a variety of modes for evaluating the exposure of
an image, such as spot exposure and center weighted averaging. These can
affect what your camera interprets as correct exposure. Check your camera
settings to make sure you are happy with the exposure of your image when
pressing the auto iris button.
TIP The area of the image used when determining focus can often be set
independently in the camera settings. If you find your camera focussing on the
wrong part of the image when using ‘auto focus,’ check the camera’s auto
focussettings.
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