--- ray/src/util/radcompare.c	2018/10/20 15:17:27	2.15
+++ ray/src/util/radcompare.c	2018/12/01 21:09:53	2.18
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: radcompare.c,v 2.15 2018/10/20 15:17:27 greg Exp $";
+static const char RCSid[] = "$Id: radcompare.c,v 2.18 2018/12/01 21:09:53 greg Exp $";
 #endif
 /*
  * Compare Radiance files for significant differences
@@ -64,6 +64,7 @@ const char	*hdr_ignkey[] = {
 			"SOFTWARE",
 			"CAPDATE",
 			"GMT",
+			"FRAME",
 			NULL	/* terminator */
 		};
 				/* header variable settings */
@@ -199,8 +200,8 @@ color_check(COLOR c1, COLOR c2)
 {
 	int	p;
 
-	if (!real_check(colval(c1,RED)+colval(c1,GRN)+colval(c1,BLU)*(1./3.),
-			colval(c2,RED)+colval(c2,GRN)+colval(c2,BLU))*(1./3.))
+	if (!real_check((colval(c1,RED)+colval(c1,GRN)+colval(c1,BLU))*(1./3.),
+			(colval(c2,RED)+colval(c2,GRN)+colval(c2,BLU))*(1./3.)))
 		return(0);
 
 	p = (colval(c1,GRN) > colval(c1,RED)) ? GRN : RED;
@@ -777,13 +778,13 @@ main(int argc, char *argv[])
 	ign_header |= !has_header(typ1);	/* check headers if indicated */
 	if (!ign_header && !headers_match())
 		return(1);
-	lu_done(&hdr1); lu_done(&hdr2);
+	lu_done(&hdr1); lu_done(&hdr2);		/* done with header info. */
 	if (!ign_header & (report >= REP_WARN)) {
-		if (typ1 == TYP_UNKNOWN)
-			printf("%s: warning - unrecognized format, comparing as binary\n",
-					progname);
 		if (lin1cnt != lin2cnt)
 			printf("%s: warning - headers are different lengths\n",
+					progname);
+		if (typ1 == TYP_UNKNOWN)
+			printf("%s: warning - unrecognized format\n",
 					progname);
 	}
 	if (report >= REP_VERBOSE)