diff --git a/Modules/PhotoacousticsAlgorithms/include/mitkPhotoacousticBeamformingSettings.h b/Modules/PhotoacousticsAlgorithms/include/mitkPhotoacousticBeamformingSettings.h
index 8748c14c98..953a7b1431 100644
--- a/Modules/PhotoacousticsAlgorithms/include/mitkPhotoacousticBeamformingSettings.h
+++ b/Modules/PhotoacousticsAlgorithms/include/mitkPhotoacousticBeamformingSettings.h
@@ -1,137 +1,137 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #ifndef MITK_PHOTOACOUSTICS_BEAMFORMING_SETTINGS
 #define MITK_PHOTOACOUSTICS_BEAMFORMING_SETTINGS
 
 
 
 namespace mitk {
   /*!
   * \brief Class holding the configuration data for the beamforming filters mitk::BeamformingFilter and mitk::PhotoacousticOCLBeamformingFilter
   *
   * A detailed description can be seen below. All parameters should be set manually for successfull beamforming.
   */
 
   class BeamformingSettings
   {
   public:
     /** \brief Pitch of the used transducer in [m].
     */
     float Pitch = 0.0003;
     /** \brief Speed of sound in the used medium in [m/s].
     */
     float SpeedOfSound = 1540;
     /** \brief This parameter is not neccessary to be set, as it's never used.
     */
     float RecordTime = 0.00006; // [s]
     /** \brief The time spacing of the input image
     */
     float TimeSpacing = 0.0000000000001; // [s]
     /** \brief The angle of the transducer elements
     */
     float Angle = -1;
     /** \brief Flag whether processed image is a photoacoustic image or an ultrasound image
     */
     bool isPhotoacousticImage = true;
 
     /** \brief How many transducer elements the used transducer had.
     */
     unsigned short TransducerElements = 128;
     /** \brief How many vertical samples should be used in the final image.
     */
     unsigned int SamplesPerLine = 2048;
     /** \brief How many lines should be reconstructed in the final image.
     */
     unsigned int ReconstructionLines = 128;
     /** \brief Sets how many voxels should be cut off from the top of the image before beamforming, to potentially avoid artifacts.
     */
     unsigned int upperCutoff = 0;
     /** \brief Sets whether only the slices selected by mitk::BeamformingSettings::CropBounds should be beamformed.
     */
     bool partial = false;
     /** \brief Sets the first and last slice to be beamformed.
     */
     unsigned int CropBounds[2] = { 0,0 };
     /** \brief Sets the dimensions of the inputImage.
     */
     unsigned int inputDim[3] = { 1,1,1 };
 
     /** \brief Decides whether GPU computing should be used
     */
     bool UseGPU = true;
 
     /** \brief Available delay calculation methods:
     * - Spherical delay for best results.
     * - A quadratic Taylor approximation for slightly faster results with hardly any quality loss.
     */
     enum DelayCalc { QuadApprox, Spherical };
     /** \brief Sets how the delays for beamforming should be calculated.
     */
     DelayCalc DelayCalculationMethod = QuadApprox;
 
     /** \brief Available apodization functions:
     * - Hamming function.
     * - Von-Hann function.
     * - Box function.
     */
     enum Apodization { Hamm, Hann, Box };
     /** \brief Sets the used apodization function.
     */
     Apodization Apod = Hann;
     /** \brief Sets the resolution of the apodization array (must be greater than 0).
     */
     int apodizationArraySize = 128;
 
     /** \brief Available beamforming algorithms:
     * - DAS (Delay and sum).
     * - DMAS (Delay multiply and sum).
     */
     enum BeamformingAlgorithm { DMAS, DAS, sDMAS};
     /** \brief Sets the used beamforming algorithm.
     */
     BeamformingAlgorithm Algorithm = DAS;
 
     /** \brief Sets whether after beamforming a bandpass should be automatically applied
     */
     bool UseBP = false;
     /** \brief Sets the position at which lower frequencies are completely cut off in Hz.
     */
     float BPHighPass = 50;
     /** \brief Sets the position at which higher frequencies are completely cut off in Hz.
     */
     float BPLowPass = 50;
     
     /** \brief function for mitk::PhotoacousticOCLBeamformingFilter to check whether buffers need to be updated
     * this method ignores changes in BPLow/BPHigh/cropBounds/Algorithm/some more, as those are insignifiant in all current situations
     */
     static bool SettingsChangedOpenCL(const BeamformingSettings& lhs, const BeamformingSettings& rhs)
     {
-      return !((abs(lhs.Angle - rhs.Angle) < 0.001f) &&
+      return !((abs(lhs.Angle - rhs.Angle) < 0.01f) && // 0.01 degree error margin
         (lhs.Apod == rhs.Apod) &&
         (lhs.DelayCalculationMethod == rhs.DelayCalculationMethod) &&
         (lhs.isPhotoacousticImage == rhs.isPhotoacousticImage) &&
-        (abs(lhs.Pitch - rhs.Pitch) < 0.0000001f) &&
+        (abs(lhs.Pitch - rhs.Pitch) < 0.000001f) && // 0.0001 mm error margin
         (lhs.ReconstructionLines == rhs.ReconstructionLines) &&
-        (abs(lhs.RecordTime - rhs.RecordTime) < 0.00000001f) &&
+        (abs(lhs.RecordTime - rhs.RecordTime) < 0.00000001f) && // 10 ns error margin
         (lhs.SamplesPerLine == rhs.SamplesPerLine) &&
         (abs(lhs.SpeedOfSound - rhs.SpeedOfSound) < 0.01f) &&
-        (abs(lhs.TimeSpacing - rhs.TimeSpacing) < 0.0000000001f) &&
+        (abs(lhs.TimeSpacing - rhs.TimeSpacing) < 0.00000000001f) && //0.01 ns error margin
         (lhs.TransducerElements == rhs.TransducerElements));
     }
   };
 }
 #endif
\ No newline at end of file