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KSCAMERA_EXTENDEDPROP_EVCOMPENSATION structure (ksmedia.h)

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The EV Compensation Control provides for exposure control that is adjusted by increments of EV compensation steps.

Syntax

typedef struct tagKSCAMERA_EXTENDEDPROP_EVCOMPENSATION {
  ULONG     Mode;
  LONG      Min;
  LONG      Max;
  LONG      Value;
  ULONGLONG Reserved;
} KSCAMERA_EXTENDEDPROP_EVCOMPENSATION, *PKSCAMERA_EXTENDEDPROP_EVCOMPENSATION;

Members

Mode

Not used. Set to 0.

Min

The minimum EV compensation supported. This is an absolute EV value.

Max

The maximum EV compensation supported. This is an absolute EV value.

Value

EV Compensation in units of steps selected in the Flags member of KSCAMERA_EXTENDEDPROP_HEADER.

Reserved

Reserved.

Remarks

Value is assigned a stepping increment. For example, if Min = -2, Max = 2 and the compensation stepping is set as one third step (incremented in units of 1/3 EV compensation), the valid values of EV compensation are -2, -1 2/3, -1 1/3, -1, -2/3, -1/3, 0, 1/3, 2/3, 1, 1 1/3, 1 2/3, and 2. This corresponds to the Value field as -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6. As an example, if Value = -6, then EV compensation = -2, or (-6 * 1/3) = -2.

Requirements

Requirement Value
Minimum supported client Available starting with Windows 8.1.
Header ksmedia.h (include Ksmedia.h)

See also

KSCAMERA_EXTENDEDPROP_HEADER

KSPROPERTY_CAMERACONTROL_EXTENDED_EVCOMPENSATION