Blackmagic Forum

Hi Everyone,

I'm working on a "Blackmagic Micro Studio 4K" cam and controlling it with arduino board using blackmagic 3G-SDI arduino shield.
I'm unable to use its "Zoom" and "Aperture"command as mentioned in its datasheet.

//****************************************************//
//***********sends current zoom value to the cam***********//
//****************************************************//
void SetZoom (currentZoom)
{ currentZoom = constrain(currentZoom, 0.0, 1.0);
sdiCameraControl.writeCommandFixed16(
1, // Destination: Camera 1
0, // Category: Lens
8, // Param: Zoom (normalised)
0, // Operation: Set Absolute,
currentZoom // Values
);
}
//****************************************************//
//*********sends current Aperture value to the cam***********//
//****************************************************//
void SetAperture (currentAperture)
{ currentAperture= constrain(currentAperture, 0.0, 1.0);
sdiCameraControl.writeCommandFixed16(
1, // Destination: Camera 1
0, // Category: Lens
3, // Param: Aperture (normalised)
0, // Operation: Set Absolute,
currentApertureAdjust // Values
);
}
//****************************************************//


Lens i'm using is "Olympus M.Zuiko 14-42mm f3.5-5.6 II R Lens". Is this lens support digital zoom through 3G-SDI shield or I code it wrongly.

want some guidance..Thanks

Mayank K Tyagi

The zoom data is working ok but there is a bug with the software control panel where the ATEM does not send the end of zoom command.

The Aperture does not exist on the software control panel (yet) so it is impossible to test.

Baz