使用setFocusMode和setFocusTarget时，出现了DJIerror param illegal， 请问是什么原因？

[ccccwb]

相机是H20T，无人机是M300RTK 代码如下：

  Lens vLens = lenses.get(VISUAL_CAMERA_INDEX);
                if(vLens.isAdjustableFocalPointSupported()){
                    PointF pointf = new PointF(motionEvent.getX()/1920,motionEvent.getY()/1080);
                    vLens.setFocusMode(SettingsDefinitions.FocusMode.AUTO, new CommonCallbacks.CompletionCallback() {
                        @Override
                        public void onResult(DJIError djiError) {
                            if(djiError != null)
                                ViewHelper.showToast(getContext(), "setFocusMode fail " + djiError.getDescription());
                        }
                    });
                    vLens.setFocusTarget(pointf, new CommonCallbacks.CompletionCallback() {
                        @Override
                        public void onResult(DJIError djiError) {
                            if(djiError != null)
                                ViewHelper.showToast(getContext(), "focus fail  " + djiError.getDescription());
                        }
                    });

[DJI-William]

首先你要确认你的lens是不是变焦镜头，其次确认是否支持AUTO模式的变焦模式，获取它支持的是AFC，与DJI Pilot 2双向对比一下。