--- ray/src/rt/srcsamp.c	1991/11/25 09:52:49	2.2
+++ ray/src/rt/srcsamp.c	1992/07/21 12:47:12	2.3
@@ -92,7 +92,7 @@ nextsample:
 	}
 	if (source[si->sn].sflags & SDISTANT)
 		return(FHUGE);
-	if (si->dom <= FTINY)
+	if (si->dom <= 1e-4)
 		goto nextsample;		/* behind source? */
 	si->dom /= d*d;
 	return(d);		/* sample OK, return distance */