--- ray/doc/notes/ReleaseNotes	2021/11/16 03:30:45	1.395
+++ ray/doc/notes/ReleaseNotes	2021/12/07 23:49:50	1.399
@@ -2453,3 +2453,48 @@ the correct set of primaries based on how the system w
 
 Added automatic flushing to the output of total, except when the -r
 (running subtotals) option is used.
+
+Improved behavior of little-used -aw option, so that it avoids sea-level
+rise caused by adding its own estimate back into the ambient level remainder.
+It ended up being simple enough to derate the final average by the factor
+corresponding to average surface absorpition, thus removing the average
+from the final bounce estimate.
+
+Introduced ies2rad upgrades by Randolph Fritz.  Randolph says it
+fixes the following problems:
+
+	1. Generates correct Radiance geometry for spheres in 1995, 2002,
+	and 2019 IES files.
+
+	2. Generates correct Radiance geometry for vertical cylinders that
+	are taller than they are wide.
+
+	3. Ignores the file source ("File Generation Type") field in the
+	2019 version of the file, which would otherwise be incorrectly used
+	as an output multiplier.
+
+    It also offers the following enhancements:
+
+	1. Shape information is included in the .rad file comments.
+
+	2. 1995, 2002, and 2019-version luminous opening geometry is
+	accounted for.
+
+	3. The 2002 and 2019 IES file versions are recognized and
+	processed appropriately.
+
+	4. I have made an attempt to do something intelligent with less
+	common "luminous opening" shapes in the 1995, 2002, and 2019 versions
+	of the standard, though I have not implemented any support for new
+	geometry; approximations are substituted and warning messages issued.
+	Unfortunately, this code is not tested, since I don't have any IES
+	files that use these shapes.
+
+Added support for depth-of-field blurring in vwrays using -pd option.
+Also, made -c count work with vwrays -i, producing multiple samples
+per indicated pixel position.  At the same time, support for the -pd
+option was added to rtpict, which calls on vwrays for its samples.
+
+Fixed issue with BSDFs that didn't obey reciprocity, where direct
+sampling wasn't following exactly with indirect sampling.  This was
+discovered and reported by Jon Sargent.