changed to if not is_preview:

Author: ashleymeigh2

mantidimaging/gui/windows/operations/model.py

@@ -131,18 +131,16 @@ def apply_to_images(self, images: ImageStack, progress=None, is_preview=False) -
         # Run filter
         exec_func = self.selected_filter.execute_wrapper(**input_kwarg_widgets)
         exec_func.keywords["progress"] = progress
-        exec_func(images)
-
-        if is_preview:
-            return
-
         params = ', '.join(f"{k}={v!r}" for k, v in exec_func.keywords.items() if k != "progress")
-        start = datetime.now()
-        LOG.info(f"Starting operation: {self.selected_filter.__name__} "
-                 f"(shape={images.data.shape}, {params})")
 
+        start = datetime.now()
+        exec_func(images)
         duration = (datetime.now() - start).total_seconds()
-        perf_logger.info(f"{self.selected_filter.filter_name} completed in {duration:.3f}s")
+
+        if not is_preview:
+            LOG.info(f"Starting operation: {self.selected_filter.__name__} "
+                     f"(shape={images.data.shape}, {params})")
+            perf_logger.info(f"{self.selected_filter.filter_name} completed in {duration:.3f}s")
 
         # store the executed filter in history if it executed successfully
         images.record_operation(