<div dir="ltr">I'm following this - I'd love to hear from "those that know" why CMY flagging is still so prevalent. My theory has been that it comes down to lumens, or perhaps "perceived" brightness, and engineers have found that it's still easier (cheaper?) to start with a super-bright tuned "white" source, then go back to subtractive color mixing to give it color. But that's just a guess.<div><br></div><div>Historically, and in my experience, the CMY mixing does a better job of creating nice pastels and face light. </div><div><br></div><div>My (former) space has a mix of ColorSources, Source Four LED Lustre 2, Source4WRDs with gels, and Chauvet Maverick profiles. The Source4WRDs with gels, and the S4LED2s gave the best delicate face light, followed by the Chauvets (but the Mavericks are so bright, it's hard to compare them). </div><div><br></div><div>Very interested in hearing some facts on this....</div><div><br></div><div> - Jon</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Jan 13, 2026 at 8:42 AM Riter, Andrew via Stagecraft <<a href="mailto:stagecraft@theatrical.net">stagecraft@theatrical.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg2966657369001310070">
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<p class="MsoNormal">Hi everyone<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I’m demo-ing some Chauvet moving lights, and when comparing them to my in-house coloursource4 units, came up with this question:<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Colour additive LED intelligent lighting is typically RGB or RBGL / RBGW etc.<u></u><u></u></p>
<p class="MsoNormal">But Moving lights (with a white source) with the dichroic flags are CYM.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Why are subtractive colour systems CMY and not RGB?<u></u><u></u></p>
<p class="MsoNormal">Why are colour additive system RBG and not CMY?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">(this is based on my experience, and maybe there are lights out there that are additive CMY…)<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Anyone know the reason or have a theory?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<b><span style="font-family:Arial,sans-serif">Andrew M. Riter</span></b><span style="font-size:9pt;font-family:"Times New Roman",serif"> <br>
</span><span style="font-size:9pt;font-family:Arial,sans-serif">Assistant Technical Director, Head Lighting Technician</span><span style="font-size:9pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:9pt;font-family:Arial,sans-serif">Chan Centre for the Performing Arts</span><span style="font-size:9pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:9pt;font-family:Arial,sans-serif">The University of British Columbia | Vancouver Campus</span><span style="font-size:9pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:9pt;font-family:Arial,sans-serif">6265 Crescent Road | Vancouver BC | V6T 1Z1 Canada</span><span style="font-size:9pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:9pt;font-family:Arial,sans-serif">Phone 604 822 2372</span><span style="font-size:9pt;font-family:"Times New Roman",serif"><br>
</span><span style="font-size:9pt;font-family:Arial,sans-serif"><a href="mailto:andrew.riter@ubc.ca" target="_blank"><span style="color:windowtext">andrew.riter@ubc.ca</span></a></span><span style="font-size:9pt;font-family:"Times New Roman",serif"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:"Times New Roman",serif"><img border="0" width="300" height="50" style="width: 3.125in; height: 0.5208in;" id="m_2966657369001310070Picture_x0020_1" src="cid:ii_19bb8693c8b4cff311" alt="UBC E-mail Signature"><span><u></u><u></u></span></span></p>
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</div></blockquote></div><div><br clear="all"></div><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr">Jon Ares<div>503-412-8248<br><a href="http://www.arescreative.com" target="_blank">www.arescreative.com</a><br>Photographic Art Sales: <a href="https://jonares.com" target="_blank">https://jonares.com</a><br><div>Books by Jon: <a href="https://shorturl.at/TSwkT" target="_blank">https://shorturl.at/TSwkT</a></div><div><a href="https://www.instagram.com/jon.ares/" target="_blank">Instagram</a></div></div><div><img width="76" height="96" src="https://ci3.googleusercontent.com/mail-sig/AIorK4x29paiIxgWUiv5GXMaL3kOWWPdYZbxlFycIdQEURPbnTGIjcRS2tRze7H-eyjxNZW7wWR_p_Feec-o"><br></div></div></div>