diff --git a/modules/photo/include/opencv2/photo.hpp b/modules/photo/include/opencv2/photo.hpp
index f96aa4505f..075d28d360 100644
--- a/modules/photo/include/opencv2/photo.hpp
+++ b/modules/photo/include/opencv2/photo.hpp
@@ -206,9 +206,6 @@ public:
     
     CV_WRAP virtual int getSamples() const = 0;
     CV_WRAP virtual void setSamples(int samples) = 0;
-
-    CV_WRAP virtual bool getTest() const = 0;
-    CV_WRAP virtual void setTest(bool val) = 0;
 };
 
 CV_EXPORTS_W Ptr<CalibrateDebevec> createCalibrateDebevec(int samples = 50, float lambda = 10.0f);
diff --git a/modules/photo/src/calibrate.cpp b/modules/photo/src/calibrate.cpp
index ab21a8603c..95951a48d1 100644
--- a/modules/photo/src/calibrate.cpp
+++ b/modules/photo/src/calibrate.cpp
@@ -55,8 +55,7 @@ public:
         samples(samples),
         lambda(lambda),
         name("CalibrateDebevec"),
-        w(tringleWeights()),
-        test(false)
+        w(tringleWeights())
     {
     }
     
@@ -84,9 +83,6 @@ public:
             for(int i = 0; i < samples; i++) {
 
                 int pos = 3 * (rand() % images[0].total()) + channel;
-                if(test) {
-                    pos = 3 * i + channel;
-                }
                 for(size_t j = 0; j < images.size(); j++) {
 
                     int val = (images[j].ptr() + pos)[0];
@@ -113,9 +109,6 @@ public:
         exp(result, result);
     }
 
-    bool getTest() const { return test; }
-    void setTest(bool val) { test = val; }
-
     int getSamples() const { return samples; }
     void setSamples(int val) { samples = val; }
 
@@ -141,7 +134,6 @@ protected:
     String name;
     int samples;
     float lambda;
-    bool test;
     Mat w;
 };
 
diff --git a/modules/photo/test/test_hdr.cpp b/modules/photo/test/test_hdr.cpp
index b0a7e49383..a3d69900bd 100644
--- a/modules/photo/test/test_hdr.cpp
+++ b/modules/photo/test/test_hdr.cpp
@@ -79,11 +79,11 @@ void loadExposureSeq(String path, vector<Mat>& images, vector<float>& times = DE
 void loadResponseCSV(String path, Mat& response)
 {
 	response = Mat(256, 1, CV_32FC3);
-    ifstream resp_file(path.c_str());
+    ifstream resp_file(path);
 	for(int i = 0; i < 256; i++) {
 		for(int c = 0; c < 3; c++) {
 			resp_file >> response.at<Vec3f>(i)[c];
-			resp_file.ignore(1);
+            resp_file.ignore(1);
 		}
 	}
 	resp_file.close();
@@ -101,31 +101,31 @@ TEST(Photo_Tonemap, regression)
 	linear->process(img, result);
 	loadImage(test_path + "linear.png", expected);
 	result.convertTo(result, CV_8UC3, 255);
-	checkEqual(result, expected, 0);
+	checkEqual(result, expected, 3);
 
 	Ptr<TonemapDrago> drago = createTonemapDrago(gamma);
 	drago->process(img, result);
 	loadImage(test_path + "drago.png", expected);
 	result.convertTo(result, CV_8UC3, 255);
-	checkEqual(result, expected, 0);
+	checkEqual(result, expected, 3);
 
 	Ptr<TonemapDurand> durand = createTonemapDurand(gamma);
 	durand->process(img, result);
 	loadImage(test_path + "durand.png", expected);
 	result.convertTo(result, CV_8UC3, 255);
-	checkEqual(result, expected, 0);
+	checkEqual(result, expected, 3);
 
 	Ptr<TonemapReinhardDevlin> reinhard_devlin = createTonemapReinhardDevlin(gamma);
 	reinhard_devlin->process(img, result);
 	loadImage(test_path + "reinharddevlin.png", expected);
 	result.convertTo(result, CV_8UC3, 255);
-	checkEqual(result, expected, 0);
+	checkEqual(result, expected, 3);
 
 	Ptr<TonemapMantiuk> mantiuk = createTonemapMantiuk(gamma);
 	mantiuk->process(img, result);
 	loadImage(test_path + "mantiuk.png", expected);
 	result.convertTo(result, CV_8UC3, 255);
-	checkEqual(result, expected, 0);
+	checkEqual(result, expected, 3);
 }
 
 TEST(Photo_AlignMTB, regression)
@@ -169,7 +169,7 @@ TEST(Photo_MergeMertens, regression)
 	loadImage(test_path + "merge/mertens.png", expected);
 	merge->process(images, result);
 	result.convertTo(result, CV_8UC3, 255);
-	checkEqual(expected, result, 0);
+	checkEqual(expected, result, 3);
 }
 
 TEST(Photo_MergeDebevec, regression)
@@ -188,7 +188,7 @@ TEST(Photo_MergeDebevec, regression)
 	loadImage(test_path + "merge/debevec.exr", expected);
 	merge->process(images, result, times, response);
 	imwrite("test.exr", result);
-	checkEqual(expected, result, 1e-3f);
+	checkEqual(expected, result, 1e-2f);
 }
 
 TEST(Photo_CalibrateDebevec, regression)
@@ -197,11 +197,11 @@ TEST(Photo_CalibrateDebevec, regression)
 
 	vector<Mat> images;
 	vector<float> times;
-	Mat expected, response;
+	Mat response, expected;
 	loadExposureSeq(test_path + "exposures/", images, times);
-	loadResponseCSV(test_path + "calibrate/debevec.csv", expected);
+    loadResponseCSV(test_path + "calibrate/debevec.csv", expected);
 	Ptr<CalibrateDebevec> calibrate = createCalibrateDebevec();
-	calibrate->setTest(true);
+    srand(1);
 	calibrate->process(images, response, times);
-	checkEqual(expected, response, 1e-3f);
+    checkEqual(expected, response, 1e-3f);
 }