--- ray/src/px/pfilt.c	1992/11/03 16:52:20	2.6
+++ ray/src/px/pfilt.c	1993/06/18 16:20:16	2.8
@@ -40,7 +40,7 @@ int  singlepass = 0;		/* true means skip first pass */
 
 int  avghot = 0;		/* true means average in bright spots */
 
-double	hotlvl = 1000.0;	/* level considered "hot" */
+double	hotlvl = 100.0;		/* level considered "hot" */
 
 int  npts = 0;			/* (half) number of points for stars */
 
@@ -292,6 +292,8 @@ char  *s;
 	fputs(s, stdout);		/* copy to output */
 	if (isaspect(s))		/* get aspect ratio */
 		inpaspect *= aspectval(s);
+	else if (isexpos(s))
+		hotlvl *= exposval(s);
 	else if (isformat(s)) {
 		formatval(fmt, s);
 		wrongformat = strcmp(fmt, COLRFMT);
@@ -329,13 +331,13 @@ FILE  *in;
 	}
 	for (i = 0; i < yres; i++) {
 		if (freadscan(scan, xres, in) < 0) {
-			nrows = nrows * i / yres;	/* adjust frame */
+			nrows = (long)nrows * i / yres;	/* adjust frame */
 			if (nrows <= 0) {
 				fprintf(stderr, "%s: empty frame\n", progname);
 				quit(1);
 			}
 			fprintf(stderr, "%s: warning - partial frame (%d%%)\n",
-					progname, 100*i/yres);
+					progname, (int)(100L*i/yres));
 			yres = i;
 			y_r = (double)nrows/yres;
 			break;