diff --git a/app/src/main/cpp/PhoneDevice.cpp b/app/src/main/cpp/PhoneDevice.cpp
index 4c401139..b4b75bb9 100644
--- a/app/src/main/cpp/PhoneDevice.cpp
+++ b/app/src/main/cpp/PhoneDevice.cpp
@@ -1373,7 +1373,7 @@ bool CPhoneDevice::OnImageReady(cv::Mat& mat)
     int thickness = round(1.4 * ratio);
     if (thickness < 1) thickness = 1;
     else if (thickness > 5) thickness = 5;
-    cv::Scalar scalar(255, 255, 255);  // white
+    cv::Scalar scalarWhite(255, 255, 255);  // white
     int fontSize = (int)(28.0 * ratio);
     cv::Point pt;
 
@@ -1561,7 +1561,7 @@ bool CPhoneDevice::OnImageReady(cv::Mat& mat)
              (unsigned int)captureResult.afState, (unsigned int)captureResult.aeState, captureResult.awbState,
              captureResult.sceneMode, GpioControl::getLightAdc(), (unsigned int)captureResult.avgY, captureResult.zoomRatio,
              (uint32_t)captureResult.duration, captureResult.frameDuration);
-    // cv::putText(mat, str, cv::Point(0, mat.rows - 20), cv::FONT_HERSHEY_COMPLEX, fontScale, scalar, thickness1, cv::LINE_AA);
+    // cv::putText(mat, str, cv::Point(0, mat.rows - 20), cv::FONT_HERSHEY_COMPLEX, fontScale, scalarWhite, thickness1, cv::LINE_AA);
 
     int fs = fontSize * 2 / 3;
     textSize = ft2->getTextSize(str, fs, -1, &baseline);
@@ -1570,13 +1570,13 @@ bool CPhoneDevice::OnImageReady(cv::Mat& mat)
     cv::Point rb(0 + textSize.width, lt2.y + textSize.height + 8 * ratio);
 
     cv::Mat roi = mat(cv::Rect(lt2, rb));
-    cv::Mat clrMat(roi.size(), CV_8UC3, cv::Scalar(0, 255, 255));
+    cv::Mat clrMat(roi.size(), CV_8UC3, scalarWhite);
     double alpha = 0.2;
     cv::addWeighted(clrMat, alpha, roi, 1.0 - alpha, 0.0, roi);
 
     // cv::rectangle(mat, lt2, rb,cv::Scalar(255, 255, 255), -1);
     ft2->putText(mat, str, lt, fs, scalarRed, -1, cv::LINE_AA, false);
-    // DrawOutlineText(ft2, mat, str, cv::Point(0, mat.rows - fs - 20 * ratio), fs, scalar, 1);
+    // DrawOutlineText(ft2, mat, str, cv::Point(0, mat.rows - fs - 20 * ratio), fs, scalarWhite, 1);
 
 #endif // OUTPUT_CAMERA_DBG_INFO
 
@@ -1620,7 +1620,7 @@ bool CPhoneDevice::OnImageReady(cv::Mat& mat)
 
         // cv::Rect rc(pt.x, pt.y, textSize.width, textSize.height);
         // cv::rectangle(mat, rc, cv::Scalar(0,255,255), 2);
-        DrawOutlineText(ft2, mat, it->text, pt, fontSize, scalar, thickness);
+        DrawOutlineText(ft2, mat, it->text, pt, fontSize, scalarWhite, thickness);
     }
 
     vector <int> params;
@@ -1629,6 +1629,22 @@ bool CPhoneDevice::OnImageReady(cv::Mat& mat)
 
     bool res = false;
     std::string fullPath = endsWith(mPath, ".jpg") ? mPath : (mPath + CTerminal::BuildPhotoFileName(mPhotoInfo));
+
+#ifdef OUTPUT_CAMERA_DBG_INFO
+    bool shouldRetry = false;
+    if (captureResult.avgY > 245 || captureResult.avgY < 10)
+    {
+        if (mPhotoInfo.retries < (DEFAULT_TAKE_PHOTO_RETRIES - 1))
+        {
+            shouldRetry = true;
+            replaceAll(fullPath, ".jpg", std::string("-") + std::to_string(mPhotoInfo.retries) + ".jpg");
+            replaceAll(fullPath, "/photos/", "/sentPhotos/");
+
+            XYLOG(XYLOG_SEVERITY_ERROR, "Photo is TOO dark or light(LDR=%u), will RETRY it", (uint32_t)captureResult.avgY);
+        }
+    }
+#endif // OUTPUT_CAMERA_DBG_INFO
+
     if (!std::filesystem::exists(std::filesystem::path(fullPath)))
     {
         bool res = cv::imwrite(fullPath.c_str(), mat, params);
@@ -1640,7 +1656,18 @@ bool CPhoneDevice::OnImageReady(cv::Mat& mat)
         {
             XYLOG(XYLOG_SEVERITY_INFO, "Succeeded to write photo: %s", fullPath.c_str());
         }
+#ifdef OUTPUT_CAMERA_DBG_INFO
+        if (shouldRetry)
+        {
+            TakePhotoCb(false, mPhotoInfo, fullPath, takingTime, objs);
+        }
+        else
+        {
+            TakePhotoCb(res, mPhotoInfo, fullPath, takingTime, objs);
+        }
+#else
         TakePhotoCb(res, mPhotoInfo, fullPath, takingTime, objs);
+#endif
     }
     else
     {