Index: /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/MapillaryAbstractImage.java
===================================================================
--- /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/MapillaryAbstractImage.java	(revision 32381)
+++ /applications/editors/josm/plugins/mapillary/src/org/openstreetmap/josm/plugins/mapillary/MapillaryAbstractImage.java	(revision 32382)
@@ -168,5 +168,5 @@
    */
   public boolean isModified() {
-    return !this.getLatLon().equals(this.latLon) || Math.abs(this.getCa() - this.ca) < EPSILON;
+    return !this.getLatLon().equals(this.latLon) || Math.abs(this.getCa() - this.ca) > EPSILON;
   }
 
Index: /applications/editors/josm/plugins/mapillary/test/unit/org/openstreetmap/josm/plugins/mapillary/MapillaryAbstractImageTest.java
===================================================================
--- /applications/editors/josm/plugins/mapillary/test/unit/org/openstreetmap/josm/plugins/mapillary/MapillaryAbstractImageTest.java	(revision 32381)
+++ /applications/editors/josm/plugins/mapillary/test/unit/org/openstreetmap/josm/plugins/mapillary/MapillaryAbstractImageTest.java	(revision 32382)
@@ -5,4 +5,6 @@
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 
 import java.util.TimeZone;
@@ -51,3 +53,20 @@
   }
 
+  @Test
+  public void testIsModified() {
+    MapillaryImage img = new MapillaryImage("key___________________", new LatLon(0, 0), 0);
+    assertFalse(img.isModified());
+    img.turn(1e-4);
+    img.stopMoving();
+    assertTrue(img.isModified());
+    img.turn(-1e-4);
+    img.stopMoving();
+    assertFalse(img.isModified());
+    img.move(1e-4, 1e-4);
+    img.stopMoving();
+    assertTrue(img.isModified());
+    img.move(-1e-4, -1e-4);
+    img.stopMoving();
+    assertFalse(img.isModified());
+  }
 }