possible fix for weird problem resulting from having many exposure times

nd2reader/driver/v3.py

@@ -172,8 +172,8 @@ class V3Driver(object):
         # The images for the various channels are interleaved within the same array. For example, the second image
         # of a four image group will be composed of bytes 2, 6, 10, etc. If you understand why someone would design
         # a data structure that way, please send the author of this library a message.
-
-        image_data = np.reshape(image_group_data[image_data_start::len(self._metadata.channels)], (height, width))
+        number_of_true_channels = int((len(image_group_data) - 4) / (height * width))
+        image_data = np.reshape(image_group_data[image_data_start::number_of_true_channels], (height, width))
 
         # Skip images that are all zeros! This is important, since NIS Elements creates blank "gap" images if you
         # don't have the same number of images each cycle. We discovered this because we only took GFP images every