summaryrefslogtreecommitdiff
path: root/doc/instruments.html
diff options
context:
space:
mode:
Diffstat (limited to 'doc/instruments.html')
-rwxr-xr-x[-rw-r--r--]doc/instruments.html399
1 files changed, 388 insertions, 11 deletions
diff --git a/doc/instruments.html b/doc/instruments.html
index f5897d5..2a970bd 100644..100755
--- a/doc/instruments.html
+++ b/doc/instruments.html
@@ -41,6 +41,66 @@
+
+
+
+
+
+ - Tele-Spectro-Radiometer<br>
+ <br>
+ Image Engineering:<br>
+ <br>
+ &nbsp;&nbsp;&nbsp; <a href="#ex1">EX1</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
- Tele-Spectro-Radiometer<br>
<br>
@@ -95,6 +155,10 @@
+
+
+
+
- "swipe" type reflective spectrometer, that can be used untethered.<br>
&nbsp;&nbsp;&nbsp; <a href="#DTP22">DTP22 Digital Swatchbook</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -137,6 +201,10 @@
+
+
+
+
- spot type reflective spectrometer.<br>
&nbsp;&nbsp;&nbsp; <a href="#DTP41">DTP41</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -179,6 +247,10 @@
+
+
+
+
- spot and strip reading reflective spectrometer.<br>
&nbsp;&nbsp;&nbsp; <a href="#DTP41">DTP41T</a> &nbsp; &nbsp; &nbsp;
@@ -223,6 +295,10 @@
+
+
+
+
- spot and strip reading reflective/transmissive spectrometer.<br>
&nbsp;&nbsp;&nbsp; <a href="#dtp51">DTP51</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -265,6 +341,10 @@
+
+
+
+
- strip reading reflective colorimeter.<br>
&nbsp;&nbsp;&nbsp; <a href="#DTP92">DTP92</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -307,6 +387,10 @@
+
+
+
+
- CRT display colorimeter.<br>
&nbsp;&nbsp;&nbsp; <a href="#DTP94">DTP94</a> <font size="-1">"Optix
@@ -349,6 +433,10 @@
+
+
+
+
XR"</font> or "Optix XR2" or "Optix Pro"- display colorimeter.<br>
<a href="#ColorMunki"><span style="text-decoration: underline;"></span></a>&nbsp;&nbsp;&nbsp;
@@ -391,6 +479,10 @@
+
+
+
+
<a href="#ColorMunki"><span style="text-decoration: underline;">ColorMunki</span></a>
Design or Photo&nbsp;
@@ -487,6 +579,10 @@
+
+
+
+
- display colorimeter. (Treated as a Eye-One Display 2)<br>
&nbsp;&nbsp;&nbsp; <a href="#i1d">CalMAN X2</a>
@@ -530,6 +626,10 @@
+
+
+
+
- display colorimeter. (Treated as a Eye-One Display 2)<br>
&nbsp;&nbsp;&nbsp; <a href="#Huey">Huey</a> &nbsp; &nbsp; &nbsp;
@@ -582,6 +682,10 @@
+
+
+
+
[The Sequel Chroma 4 may also work.]<br>
<br>
@@ -626,6 +730,10 @@
+
+
+
+
- see <a href="#i1d">Eye-One Display</a><br>
<br>
@@ -675,6 +783,10 @@
+
+
+
+
[The Spyder 1 also seems to work.]<br>
&nbsp;&nbsp;&nbsp;&nbsp; <a href="#spyd3">Spyder 3</a> &nbsp;
@@ -696,7 +808,11 @@
<br>
Other:<br>
&nbsp;&nbsp;&nbsp; <span class="titre"><a href="#HCFR">Colorimètre
- HCFR</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+ HCFR</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
@@ -769,9 +885,18 @@
+
+
+
+
- - display colorimeter<span class="titre"><br>
- </span><br>
+ - display colorimeter<span class="titre"></span><br>
+ &nbsp;&nbsp;&nbsp; <a href="#SMCube">SwatchMate Cube</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+ - reflective colorimeter<br>
+ <br>
Other instruments can be supported indirectly, since patch result
files created by other packages can be imported into Argyll.<br>
<span class="titre"><br>
@@ -1082,6 +1207,10 @@
+
+
+
+
type</span> selection parameter. Depending on the instrument, this
may combine two related functions: 1) Changing the measurement mode
@@ -1211,14 +1340,32 @@
</span><span style="font-weight: bold;">Availability:<br>
<br>
</span>The <span style="font-weight: bold;">specbos 1211</span><span
- style="font-weight: bold;"> </span>and <b>1201</b>from <a
+ style="font-weight: bold;"> </span>and <b>1201</b> from <a
href="http://www.jeti.com/">JETI</a>&nbsp; are currently
available instruments. These are reference grade instruments
capable of emissive and ambient measurements, and are often used
for monitor, projector and cinema calibration &amp;
- characterization, and colorimeter calibration, amongst many other
- uses.<br>
+ characterization, lighting measurement and colorimeter
+ calibration, amongst many other uses.<br>
</p>
+ <hr size="2" width="100%">
+ <p><span style="font-weight: bold;"><a name="ex1"></a><span
+ style="font-weight: bold;">Image Engineering EX1<br>
+ </span></span></p>
+ <img alt="Image Engineering EX1" src="EX1.jpg" height="158"
+ width="253"> <span style="font-weight: bold;"><br>
+ </span><span style="font-weight: bold;"><br>
+ Availability:<br>
+ <br>
+ </span>The <a
+href="http://www.image-engineering.de/iq-products/iq-tools/measurement-devices/ex1">Image
+
+
+
+ Engineering EX1</a> is a currently available instruments. This is
+ a high resolution spectrometer intended for the measurement of light
+ sources.
+ <p> </p>
<p><br>
</p>
<hr size="2" width="100%">
@@ -1235,6 +1382,10 @@
+
+
+
+
<a href="http://www.kleininstruments.com/">Klein Instruments</a>&nbsp;
@@ -1242,6 +1393,10 @@
+
+
+
+
is a currently available instrument. It is noted for it's speed,
high precision, and ability to measure to very low light
@@ -1553,6 +1708,10 @@
+
+
+
+
CRT display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Cathode Ray
Tube display, that is of the Refresh type [Default, CB2].<br>
@@ -1615,6 +1774,10 @@
+
+
+
+
LCD display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Liquid
Crystal Display, that is of the Non-Refresh type [default, CB1].<br>
@@ -1658,6 +1821,10 @@
+
+
+
+
CRT display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Cathode Ray
Tube display, that is of the Refresh type [CB2].<br>
@@ -1717,6 +1884,10 @@ Gretag
+
+
+
+
MacBeth (Now X-Rite) is a discontinued instrument. It is often
available second hand. If buying it second hand, make sure it comes
@@ -1962,6 +2133,10 @@ Gretag
+
+
+
+
Smile</span> are:<br>
<br>
@@ -1992,6 +2167,10 @@ Gretag
+
+
+
+
LCD with LED back-light&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A Liquid Crystal display that uses
@@ -2039,6 +2218,10 @@ Gretag
+
+
+
+
LCD display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Liquid
Crystal Display, that is of the Non-Refresh type. [Default, CB1]<br>
@@ -2082,6 +2265,10 @@ Gretag
+
+
+
+
CRT display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A
Cathode Ray Tube display, that is of the Refresh type. [CB2]<br>
@@ -2144,6 +2331,10 @@ href="http://www8.hp.com/us/en/products/oas/product-detail.html?oid=5225568">HP
+
+
+
+
DreamColor</a> instruments are also reported to work. They will
appear as a be a the same as the i1Display Pro.<br>
@@ -2258,6 +2449,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
Pro</a> is still available.<br>
<span style="font-weight: bold;"></span><br>
@@ -2305,6 +2500,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
LCD display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Liquid
Crystal Display, that is of the Non-Refresh type. [Default, CB1]<br>
@@ -2348,6 +2547,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
CRT display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Cathode Ray
Tube display, that is of the Refresh type. [CB2]<br>
@@ -2416,6 +2619,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
CRT display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Cathode Ray
Tube display, that is of the Refresh type.<br>
@@ -2459,6 +2666,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
LCD display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Liquid
Crystal Display, that is of the Non-Refresh type.<br>
@@ -2535,6 +2746,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
LCD display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; A Liquid Crystal
Display, that is of the Non-Refresh type. [Default, CB1]<br>
@@ -2578,6 +2793,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
CRT display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Cathode Ray
Tube display, that is of the Refresh type. [CB2]<br>
@@ -2744,6 +2963,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
- normal gamut Liquid Crystal Display with standard Cold Cathode
Fluorescent Lamp backlight.<br>
@@ -2796,6 +3019,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; Wide Gamut LCD, RGB LED
Backlight - wide gamut Liquid Crystal Display with RGB LED
@@ -2843,6 +3070,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
- normal gamut Liquid Crystal Display with alternative Cold Cathode
Fluorescent Lamp backlight (Laptop ?)<br>
@@ -2874,7 +3105,11 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
</span><span style="font-weight: bold;">Operation:<br>
</span><br>
These instruments are capable of using using CCSS (<a
- href="file:///D:/src/argyll/doc/File_Formats.html#ccss">Colorimeter
+ href="file:///D:/src/argyll/doc/File_Formats.html#ccss">Colorimeter
+
+
+
+
Calibration Spectral Sample</a>) files, and this also gives the
instrument the capability of using a non-default standard observer.
CCSS files can be created using the <a
@@ -2960,6 +3195,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
- normal gamut Liquid Crystal Display with standard Cold Cathode
Fluorescent Lamp backlight.<br>
@@ -3012,6 +3251,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; Wide Gamut LCD, RGB LED
Backlight - wide gamut Liquid Crystal Display with RGB LED
@@ -3059,6 +3302,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
- normal gamut Liquid Crystal Display with alternative Cold Cathode
Fluorescent Lamp backlight (Laptop ?)<br>
@@ -3116,6 +3363,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
HCFR Probe</span> is a kit instrument from <span
style="font-weight: bold;"></span> <a
@@ -3177,6 +3428,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
LCD display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Liquid
Crystal Display [Default].<br>
@@ -3220,6 +3475,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
CRT display&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; A Cathode Ray
Tube display.<br>
@@ -3239,14 +3498,17 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
is a low cost display colorimeter instrument from <span
style="font-weight: bold;"></span> <a
href="http://www.hughski.com/">Hughski</a>. <br>
+ ArgyllCMS will also work with the <a
+ href="http://www.hughski.com/colorhug2.html">ColorHug2</a>.<br>
<br>
<span style="font-weight: bold;">Operation:</span><br>
<span style="font-weight: bold;"><span style="font-weight: bold;"></span></span><br>
Due to the nature of its sensor, the ColorHug accuracy is quite
- dependent on the instrument calibration matrix. A custom .CCMX will
- greatly assist it's accuracy, although a workaround is to calibrate
- your display using its native white point, rather than aiming for
- some absolute white point such as D65.<br>
+ dependent on the instrument calibration matrix. (The <b>ColorHug2</b>
+ is much more forgiving though). A custom .CCMX will greatly assist
+ it's accuracy, although a workaround is to calibrate your display
+ using its native white point, rather than aiming for some absolute
+ white point such as D65.<br>
<br>
The Display Selections for this instrument are:<br>
<br>
@@ -3260,6 +3522,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
LCD, CCFL Backlight [Default]<br>
&nbsp;&nbsp; <b>c</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -3273,6 +3539,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
CRT display<br>
&nbsp;&nbsp; <b>p</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -3286,6 +3556,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
Projector<br>
&nbsp;&nbsp; <b>e</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -3298,6 +3572,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
LCD, White LED Backlight<br>
&nbsp;&nbsp; <b>F</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -3311,6 +3589,10 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
Factory matrix (For Calibration) [CB1]<br>
&nbsp;&nbsp;<b> R</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -3324,9 +3606,104 @@ href="http://www.pantone.com/pages/products/product.aspx?pid=562&amp;ca=2">Huey
+
+
+
+
Raw Reading (For Factory matrix Calibration) [CB2]<br>
<br>
+ <hr style="width: 100%; height: 2px;"><br>
+ <a name="SMCube"></a><span style="font-weight: bold;">SwatchMate
+ Cube<br>
+ <br>
+ <img alt="SwatchMate Cube" src="SMCube.jpg" height="205"
+ width="169"><br>
+ <br>
+ </span><span style="font-weight: bold;">Availability:<br>
+ <br>
+ </span>The Cube from <a href="http://www.swatchmate.com/">SwatchMate</a>
+ is a currently available entry level Colorimeter, with <a
+ href="http://www.argyllcms.com/doc2/smcube/smcube1.html">somewhat
+ limited accuracy</a>. The ArgyllCMS driver provides two
+ alternative calibrations that noticably <a
+ href="http://www.argyllcms.com/doc2/smcube/smcube2.html">improve
+ this accuracy</a>.<br>
+ <br>
+ The Calibration Selections for this instrument are:<br>
+ <br>
+ &nbsp;&nbsp; <b>m</b>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+ Matt surfaces [Default]<br>
+ &nbsp;&nbsp; <b>g</b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ Gloss surfaces<br>
+ &nbsp;&nbsp; <b>N</b>
+ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
+
+
+
+ Native Calibration<br>
+ <br>
+ <span style="font-weight: bold;">Operation:<br>
+ </span><br>
+ The Cube must be connected via USB for operation with ArgyllCMS, and
+ can be connected either by USB or using Bluetooth LE when used with
+ <a href="http://www.argyllpro.com.au/">ArgyllPRO ColorMeter</a> on
+ capable Android devices.<br>
+ <br>
+ The Cube goes to sleep fairly rapidly and must be woken up by
+ pressing the top of it before connecting via USB to be recognized by
+ ArgyllCMS, although once connected, and with an ArgyllCMS utility
+ running, it should stay awake.<br>
+ <br>
+ When connecting via Bluetooth to ColorMeter, the foreground
+ application will be the one that connects to it.<br>
+ <br>
+ The ability to measure values into its own memory and recover them
+ later is not supported, since it is not possible to use the
+ ArgyllCMS calibrations with this feature.<br>
+ <br>
+ <span style="font-weight: bold;">Calibration:</span><br>
+ <br>
+ As well as the normal white calibration step, the ArgyllCMS driver
+ offers two option supplemental calibration steps that can improve
+ accuracy, but both require appropriate calibration conditions. You
+ can use <a href="spotread.html">spotread</a> with the 'k' command
+ to trigger this calibration.<br>
+ <br>
+ The <b>black calibration</b> requires a light trap, and the easiest
+ way of providing this is to place the Cube in a location that is
+ dark (i.e. not illuminated directly by any light) and some distance
+ from any surface. A practical approach I have used is to place the
+ measuring end in a thick black sock, and hide it from direct
+ illumination while this calibration step is done.<br>
+ <br>
+ The <b>gloss calibration</b> requires a black glossy surface. I
+ have used a paint catalog gloss paint black sample square for this,
+ but some other completely black glossy surface of sufficient size
+ such as a glossy black plastic item or a smooth surface painted in
+ gloss black paint should also work.<br>
+ <br>
+ <br>
+ <br>
<br>
<br>
<br>