diff --git a/app/src/main/java/com/xypower/mppreview/Camera2RawFragment.java b/app/src/main/java/com/xypower/mppreview/Camera2RawFragment.java
index 238666c..d59f39f 100644
--- a/app/src/main/java/com/xypower/mppreview/Camera2RawFragment.java
+++ b/app/src/main/java/com/xypower/mppreview/Camera2RawFragment.java
@@ -655,6 +655,7 @@ public class Camera2RawFragment extends Fragment {
                 Size largestJpeg = Collections.max(Arrays.asList(map.getOutputSizes(ImageFormat.JPEG)), new CompareSizesByArea());
 
                 Size largestRaw = Collections.max(Arrays.asList(map.getOutputSizes(ImageFormat.RAW_SENSOR)), new CompareSizesByArea());
+//                Size largestRaw = Arrays.asList(map.getOutputSizes(ImageFormat.RAW_SENSOR)).get(1);
 
                 synchronized (mCameraStateLock) {
                     // Set up ImageReaders for JPEG and RAW outputs.  Place these in a reference
@@ -982,8 +983,8 @@ public class Camera2RawFragment extends Fragment {
             }
 
             // Find the best preview size for these view dimensions and configured JPEG size.
-            Size previewSize = chooseOptimalSize(map.getOutputSizes(SurfaceTexture.class), rotatedViewWidth, rotatedViewHeight, maxPreviewWidth, maxPreviewHeight, largestJpeg);
-//            Size previewSize = new Size(3840, 2160);
+//            Size previewSize = chooseOptimalSize(map.getOutputSizes(SurfaceTexture.class), rotatedViewWidth, rotatedViewHeight, maxPreviewWidth, maxPreviewHeight, largestJpeg);
+            Size previewSize = new Size(3840, 2160);
 
             if (swappedDimensions) {
                 mTextureView.setAspectRatio(previewSize.getHeight(), previewSize.getWidth());
@@ -1137,7 +1138,6 @@ public class Camera2RawFragment extends Fragment {
 
 //                ImageSaverBuilder jpegBuilder = new ImageSaverBuilder(activity).setCharacteristics(mCharacteristics);
                 ImageSaverBuilder rawBuilder = new ImageSaverBuilder(activity).setCharacteristics(mCharacteristics);//保存拍照参数
-                rawBuilder.setExposetime((long) v);//保存曝光时间
                 rawBuilder.setList(mlist);
 //                mJpegResultQueue.put((int) request.getTag(), jpegBuilder);
                 mRawResultQueue.put((int) request.getTag(), rawBuilder);
@@ -1180,7 +1180,6 @@ public class Camera2RawFragment extends Fragment {
 
     private void dequeueAndSaveImage(TreeMap<Integer, ImageSaverBuilder> pendingQueue, RefCountedAutoCloseable<ImageReader> reader) {
         synchronized (mCameraStateLock) {
-            reader.get();
             Map.Entry<Integer, ImageSaverBuilder> entry = null;
             if (pendingQueue != null) {
                 for (Map.Entry<Integer, ImageSaverBuilder> item : pendingQueue.entrySet()) {
diff --git a/app/src/main/java/com/xypower/mppreview/ImageSaver.java b/app/src/main/java/com/xypower/mppreview/ImageSaver.java
index a554621..75d78e7 100644
--- a/app/src/main/java/com/xypower/mppreview/ImageSaver.java
+++ b/app/src/main/java/com/xypower/mppreview/ImageSaver.java
@@ -6,6 +6,7 @@ import static com.xypower.mppreview.HdrUtil.generateTimestamp;
 import android.content.Context;
 import android.graphics.ImageFormat;
 import android.hardware.camera2.CameraCharacteristics;
+import android.hardware.camera2.CaptureRequest;
 import android.hardware.camera2.CaptureResult;
 import android.hardware.camera2.DngCreator;
 import android.media.Image;
@@ -33,18 +34,16 @@ public class ImageSaver implements Runnable {
     private final Context mContext;
 
     private final Camera2RawFragment.RefCountedAutoCloseable<ImageReader> mReader;
-    private final long mExpostime;
 
     private ArrayList<PngPhotoBean> mlist = new ArrayList<>();//用来存储已拍照的照片名称
 
-    public ImageSaver(Image image, File file, CaptureResult result, CameraCharacteristics characteristics, Context context, Camera2RawFragment.RefCountedAutoCloseable<ImageReader> reader, long mexpostime, ArrayList<PngPhotoBean> list) {
+    public ImageSaver(Image image, File file, CaptureResult result, CameraCharacteristics characteristics, Context context, Camera2RawFragment.RefCountedAutoCloseable<ImageReader> reader, ArrayList<PngPhotoBean> list) {
         mImage = image;
         mFile = file;
         mCaptureResult = result;
         mCharacteristics = characteristics;
         mContext = context;
         mReader = reader;
-        mExpostime = mexpostime;
         mlist = list;
     }
 
@@ -91,9 +90,10 @@ public class ImageSaver implements Runnable {
         }
         mReader.close();
         if (success) {
+            Long t = mCaptureResult.get(CaptureResult.SENSOR_EXPOSURE_TIME);
             File directory = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
             String directoryPath = directory.getPath();
-            File file = new File(directory, "create_" + mExpostime + "_" + generateTimestamp() + ".png");
+            File file = new File(directory, "create_" + t + "_" + generateTimestamp() + ".png");
             String path = file.getPath();
             Log.e("测试测试", "开始转化：" + System.currentTimeMillis());
             try {
@@ -102,7 +102,7 @@ public class ImageSaver implements Runnable {
                 throw new RuntimeException(e);
             }
             PngPhotoBean bean = new PngPhotoBean();
-            bean.setEtime(mExpostime);
+            bean.setEtime(t);
             bean.setPath(path);
             mlist.add(bean);
             Log.e("测试测试", "转化结束：" + System.currentTimeMillis());
@@ -113,7 +113,6 @@ public class ImageSaver implements Runnable {
                 String path1 = bean1.getPath();
                 String path2 = bean2.getPath();
                 String outputPath = directoryPath + "/" + "hdr_" + generateTimestamp() + ".png";
-                Log.e("测试测试", "照片路径：" + path1 + " 照片路径：" + path2 + " 生成路径：" + outputPath);
                 boolean b = makeHdr(bean1.getEtime(), path1, bean2.getEtime(), path2, outputPath);
                 Log.e("测试测试", "合成结束：" + System.currentTimeMillis());
             }
diff --git a/app/src/main/java/com/xypower/mppreview/ImageSaverBuilder.java b/app/src/main/java/com/xypower/mppreview/ImageSaverBuilder.java
index bb57bb3..1984cef 100644
--- a/app/src/main/java/com/xypower/mppreview/ImageSaverBuilder.java
+++ b/app/src/main/java/com/xypower/mppreview/ImageSaverBuilder.java
@@ -18,7 +18,6 @@ public class ImageSaverBuilder {
     public CaptureResult mCaptureResult;
     public CameraCharacteristics mCharacteristics;
     public Context mContext;
-    public long mexpostime;
     public Camera2RawFragment.RefCountedAutoCloseable<ImageReader> mReader;
 
     private ArrayList<PngPhotoBean> mlist;
@@ -33,12 +32,6 @@ public class ImageSaverBuilder {
         mContext = context;
     }
 
-    public synchronized ImageSaverBuilder setExposetime(long time) {
-
-        mexpostime = time;
-        return this;
-    }
-
     public synchronized ImageSaverBuilder setRefCountedReader(Camera2RawFragment.RefCountedAutoCloseable<ImageReader> reader) {
         if (reader == null) throw new NullPointerException();
 
@@ -80,7 +73,7 @@ public class ImageSaverBuilder {
         if (!isComplete()) {
             return null;
         }
-        return new ImageSaver(mImage, mFile, mCaptureResult, mCharacteristics, mContext, mReader, mexpostime, mlist);
+        return new ImageSaver(mImage, mFile, mCaptureResult, mCharacteristics, mContext, mReader,  mlist);
     }
 
     public synchronized String getSaveLocation() {