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    CameraControl.exposureCompensation Redirect 1

    « DOM Reference

    Non-standard
    This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

    This API is available on Firefox OS for certified applications only.

    Summary

    The exposureCompensation property value is a number used to compensate the camera exposure.

    This property is read-only; to change the exposure, you need to call the CameraControl.setExposureCompensation() method.

    Acceptable values for this property must range from the value of the CameraCapabilities.minExposureCompensation property to the value of the CameraCapabilities.maxExposureCompensation property in steps of the CameraCapabilities.stepExposureCompensation property.

    Invalid values are rounded to the nearest valid value.

    Syntax

    var exposure = instanceOfCameraControl.exposureCompensation

    Value

    Return a number representing the current exposure compensation.

    Example

    var options = {
      camera: navigator.mozCameras.getListOfCameras()[0]
    };
     
    function onSuccess( camera ) {
      var exposure = camera.exposureCompensation;
    
      console.log('Exposure compensation: ' + exposure);
    };
    
    navigator.mozCameras.getCamera(options, onSuccess)
    

    Specification

    Not part of any specification; however, this API should be removed when the WebRTC Capture and Stream API has been implemented.

    See also

    Document Tags and Contributors

    Contributors to this page: Sheppy
    Last updated by: Sheppy,