在UIImagePickerController.cameraViewTransform中不工作。

My app stopped working correctly with iOS 4.3. It uses a custom camera view overlay for the UIImagePickerController. And I want to adjust the size and origon of the camera preview view by set cameraViewTransform as CGAffineTransformMakeTranslation and CGAffineTransformScale, but the CGAffineTransformMakeTranslation seems to have no effect, However scale and rotate transforms work as expected. And the preview View is always in the center of the screen, I want to make the change.My app stopped working correctly with iOS 4.3.