ATEM API v7.2 Camera Control Read Focus issue

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Benoit Leloutre

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  • Joined: Wed Jan 10, 2018 10:01 am

ATEM API v7.2 Camera Control Read Focus issue

PostWed Jan 10, 2018 10:35 am

Hi,
I'm trying to get the focus value of a BMD studio camera 4k through the atem API.
In C# with BMDSwitcherAPI, I'm using:
...
IBMDSwitcher m_switcher;
...
cameraControl = (IBMDSwitcherCameraControl)m_switcher;
...
double focus;
cameraControl.GetFloats(cameraID, 0, 0, 1, out focus);


The range value from the whitepaper is [0-1] in 16 bits.
But If I do an autofocus with the atem software interface and after I do a get in C#, I receive "-13,6745...." If I turn the lens ring to minimum, I get the same value, to maximim, the same value.

But if I set a value like "0,83" with cameraControl.SetFloats(cameraID, 0, 0, 1, 0.83), my focus is good.

In other words, I want to read the focus value after turning the physical ring of the lens through the atem API.

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