diff --git a/source/blender/blenlib/intern/uvproject.c b/source/blender/blenlib/intern/uvproject.c
index ecb42315ee3..be7682a63d4 100644
--- a/source/blender/blenlib/intern/uvproject.c
+++ b/source/blender/blenlib/intern/uvproject.c
@@ -70,7 +70,7 @@ void project_from_camera(float target[2], float source[3], UvCameraInfo *uci)
 			vec2d[0]= pv4[0];
 			vec2d[1]= pv4[2];
 			target[0]= angle * ((float)M_PI / uci->camangle);
-			target[1]= pv4[1] / (len_v2(vec2d) * uci->camsize);
+			target[1]= pv4[1] / (len_v2(vec2d) * (uci->camsize * 2.0f));
 		}
 	}
 	else {
@@ -146,7 +146,11 @@ UvCameraInfo *project_camera_info(Object *ob, float (*rotmat)[4], float winx, fl
 	uci.camangle= lens_to_angle(camera->lens) / 2.0f;
 	uci.camsize= uci.do_persp ? tanf(uci.camangle) : camera->ortho_scale;
 
-	if (invert_m4_m4(uci.caminv, ob->obmat)) {
+	/* account for scaled cameras */
+	copy_m4_m4(uci.caminv, ob->obmat);
+	normalize_m4(uci.caminv);
+
+	if (invert_m4(uci.caminv)) {
 		UvCameraInfo *uci_pt;
 
 		/* normal projection */