AutoExposure Property

Summary
Gets or sets the camera's automatic exposure setting.
Syntax
C#
C++/CLI
public bool AutoExposure { get; set; } 
public: 
property bool AutoExposure { 
   bool get(); 
   void set (    bool ); 
} 

Property Value

true if the AutoExposure setting is enabled; false, otherwise.

Remarks

Gets and sets the auto setting for the CameraControlProperty.Exposure property. To get the range and default value of this camera property, use the CameraControl.ExposureInfo property. For more information, refer to the Microsoft documentation for the IAMCameraControl.Get and IAMCameraControl.Set and methods. Assigning a value to this property can raise an error exception.

For more information, refer to the Error Codes.

Example
C#
using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void CameraControlExample() 
{ 
   // reference the capture control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   try 
   { 
      // try to find a USB video device. use your device's name here 
      if (capturectrl.VideoDevices["USB"] == null) 
         throw new Exception("No USB video device available"); 
 
      capturectrl.VideoDevices["USB"].Selected = true; 
 
      // reference the camera control 
      CameraControl camera = capturectrl.CameraControl; 
 
      if (camera != null) 
      { 
         // try to set some camera auto properties 
         camera.AutoExposure = true; 
         camera.AutoFocus = true; 
         camera.AutoIris = true; 
         camera.AutoPan = false; 
         camera.AutoRoll = false; 
         camera.AutoTilt = false; 
         camera.AutoZoom = true; 
 
         // now try to set some camera manual properties 
         camera.Exposure = camera.ExposureInfo.Min; 
         camera.Focus = camera.FocusInfo.Max; 
         camera.Iris = camera.IrisInfo.Default; 
         camera.Pan = camera.PanInfo.Min; 
         camera.Roll = camera.RollInfo.Min; 
         camera.Tilt = camera.TiltInfo.Min; 
         camera.Zoom = camera.ZoomInfo.Min; 
 
         // now increment a property by the stepping delta 
         camera.Exposure += camera.ExposureInfo.StepDelta; 
 
         // set the result to what we expect 
         _result = (camera.Exposure == camera.ExposureInfo.Min + camera.ExposureInfo.StepDelta); 
 
         // now check a property to see if it is supported and has a manual setting 
         // if so, set it to auto 
         if (camera.ExposureInfo.Flags != CameraControlFlags.Unsupported 
            && camera.ExposureInfo.Flags == CameraControlFlags.Manual) 
            camera.AutoExposure = true; 
 
         // set the result to what we expect 
         _result &= (camera.ExposureInfo.Flags == CameraControlFlags.Auto); 
      } 
 
      // continue setting capture settings 
      // and possibly start a capture process 
      // ... 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
Requirements

Target Platforms

Help Version 23.0.2024.2.29
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© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Multimedia Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.