From 953a5d7004e738a9c059511b5c2d9f4095001733 Mon Sep 17 00:00:00 2001
From: Joel Collins <joel@jtcollins.net>
Date: Thu, 30 Jan 2020 14:21:18 +0000
Subject: [PATCH] Fixed checking if LST exists

---
 openflexure_microscope/microscope.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/openflexure_microscope/microscope.py b/openflexure_microscope/microscope.py
index 1e397339..afdb4d22 100644
--- a/openflexure_microscope/microscope.py
+++ b/openflexure_microscope/microscope.py
@@ -176,7 +176,7 @@ class Microscope:
                 # Read LST. Returns None if no LST is active
                 lst_arr = self.camera.read_lens_shading_table()
 
-                if lst_arr:
+                if lst_arr is not None:
                     b64_string, dtype, shape = serialise_array_b64(lst_arr)
 
                     settings_current["camera"]["lens_shading_table"] = {