diff --git a/DOCS/man/vf.rst b/DOCS/man/vf.rst
index faca4114a9..46384eb20f 100644
--- a/DOCS/man/vf.rst
+++ b/DOCS/man/vf.rst
@@ -303,7 +303,7 @@ Available filters are:
        Available gamma functions are:
 
        :auto:         automatic selection (default)
-       :bt.1886:      ITU-R BT.1886 (approximation of BT.601/BT.709/BT.2020 curve)
+       :bt.1886:      ITU-R BT.1886 (EOTF corresponding to BT.601/BT.709/BT.2020)
        :srgb:         IEC 61966-2-4 (sRGB)
        :linear:       Linear light
        :gamma1.8:     Pure power curve (gamma 1.8)
diff --git a/DOCS/man/vo.rst b/DOCS/man/vo.rst
index 0e091591e2..647dd8c1a4 100644
--- a/DOCS/man/vo.rst
+++ b/DOCS/man/vo.rst
@@ -855,6 +855,10 @@ Available video output drivers are:
         0.8
             Pitch black room
 
+        NOTE: Typical movie content (Blu-ray etc.) already contains a gamma
+        drop of about 0.8, so specifying it here as well will result in even
+        even darker image than intended!
+
     ``gamma-auto``
         Automatically corrects the gamma value depending on ambient lighting
         conditions (adding a gamma boost for dark rooms).
@@ -865,8 +869,9 @@ Available video output drivers are:
         NOTE: Only implemented on OS X.
 
     ``target-prim=<value>``
-        Specifies the primaries of the display. Video colors will be adapted
-        to this colorspace if necessary. Valid values are:
+        Specifies the primaries of the display. Video colors will be adapted to
+        this colorspace when ICC color management is not being used. Valid
+        values are:
 
         auto
             Disable any adaptation (default)
@@ -893,12 +898,13 @@ Available video output drivers are:
 
     ``target-trc=<value>``
         Specifies the transfer characteristics (gamma) of the display. Video
-        colors will be adjusted to this curve. Valid values are:
+        colors will be adjusted to this curve when ICC color management is
+        not being used. Valid values are:
 
         auto
             Disable any adaptation (default)
         bt.1886
-            ITU-R BT.1886 curve, without the brightness drop (approx. 1.961)
+            ITU-R BT.1886 curve (assuming infinite contrast)
         srgb
             IEC 61966-2-4 (sRGB)
         linear
@@ -913,7 +919,7 @@ Available video output drivers are:
             ProPhoto RGB (ROMM)
 
     ``icc-profile=<file>``
-        Load an ICC profile and use it to transform linear RGB to screen output.
+        Load an ICC profile and use it to transform video RGB to screen output.
         Needs LittleCMS 2 support compiled in. This option overrides the
         ``target-prim``, ``target-trc`` and ``icc-profile-auto`` options.