KSPROPERTY_CAMERACONTROL_EXPOSURE_RELATIVE

The KSPROPERTY_CAMERACONTROL_EXPOSURE_RELATIVE property specifies the electronic shutter speed.

Usage Summary Table

GetSetTargetProperty Descriptor TypeProperty Value Type

Yes

Yes

Filter or node

KSPROPERTY_CAMERACONTROL_S or KSPROPERTY_CAMERACONTROL_NODE_S

LONG

 

The property value (operation data) is a LONG that specifies a camera's relative exposure setting. Step size is hardware-dependent. To determine the step size, you can make a get request on the KSPROPERTY_CAMERACONTROL_EXPOSURE property.

ValueDescription

0

Set the exposure time to the implementation-specific default value.

Positive value

Increment the exposure time by one step.

Negative value

Decrement the exposure time by one step.

 

Remarks

When making a set request, you should provide one of the values in the preceding table in the Value member of the KSPROPERTY_CAMERACONTROL_NODE_S structure.

When making a get request, the client receives one of the values in the preceding table in the Value member of the KSPROPERTY_CAMERACONTROL_NODE_S structure. The value indicates the current exposure time setting for the camera.

Set requests will fail if the Auto-Exposure mode control is in Auto mode or Aperture Priority mode.

Requirements

Version

Available for Windows Vista and later versions of the Windows operating system.

Header

Ksmedia.h (include Ksmedia.h)

See also

KSPROPERTY_CAMERACONTROL_NODE_S

 

 

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