Blackmagic Design Blackmagic Studio Cameras Manuel D'installation Et D'utilisation page 26

Assigning Camera Functions to S.Bus Channels
If you are using S.Bus to control your Blackmagic Micro Studio Camera 4K, you can use the
'remote' menu to assign the following functions to individual S.Bus channels:
‚ Trigger record
‚ Iris
‚ Focus
‚ Auto focus
‚ Zoom
‚ Gain
‚ Shutter speed
‚ White balance
‚ Audio levels
‚ Frame rate
To assign functions to individual S.Bus channels, simply select the function you wish to control
and assign an available channel using the 'up,' 'down' and 'set' buttons.
Standard radio transmitters for remote control vehicles that support the S.Bus protocol are usually
setup with control ranges built into their controller output, so that all you need to do is assign camera
functions to the correct individual S.Bus channels for remote control of your camera functions.
You can also use the S.Bus protocol to develop your own sophisticated custom control
solutions.
Developing a Custom Controller
If you would like to develop your own custom camera control solutions, you can use the S.Bus
input on the expansion cable as a way to interface camera functions on Blackmagic Micro
Studio Camera 4K.
When sending commands via the S.Bus input to Micro Studio Camera 4K, the input values will
need to be between 44 and 212 in order to be interpreted by the camera. A value of 128 is
considered to be the midpoint or neutral position when using a radio control transmitter.
The way in which specific commands are sent to the camera will depend upon how you have
mapped the camera functions to your controller.
There are two ways to map the commands to the controls.
‚ The first type maps settings to specific ranges of the input so that sending a value
within a certain range will trigger a particular setting.
For example, the f-stop settings on a lens from f1.8 to f22 will be distributed along the
entire range of 44 to 212. Sending a value between 44 and 51 would set the lens to f1.8.
These values will then continue along the entire range so that sending a value between
206 and 212 would select f22. Zoom and focus changes are controlled the same way.
f1.8 f2
44–61 62–79
‚ The second type of control registers any change from the neutral value of 128 to a
value above or below and then back to the neutral point. This will be considered by the
camera as a valid toggle signal, which increases or decreases the assigned settings.
Settings like the REC trigger, autofocus, gain, shutter speed, white balance and frame
rate work on this basis.
f2.8 f4 f5.6
80–97 98–115 116–133
f8 f11 f16
134–151 152–169 170–197
f22
198–212
Settings 26