# Noob greenscreen maths question **URL:** \ **Category:** Flame Questions\ **Created:** [October 5, 2021, 2:11pm UTC](https://forum.logik.tv/t/noob-greenscreen-maths-question/3955 "2021-10-05T14:11:14Z")\ **Posts on this page:** 1\ **Showing post:** 11
**Author:** ![randy](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/randy/32/6122_2.png) [@randy](https://forum.logik.tv/u/randy)\ **Post date:** [October 6, 2021, 4:31pm UTC](https://forum.logik.tv/t/noob-greenscreen-maths-question/3955/11 "2021-10-06T16:31:38Z")
Despill it like this. > [@I just spent the last 30 mins painting with Wash](https://forum.logik.tv/t/i-just-spent-the-last-30-mins-painting-with-wash/3356/11): > > Savage. My favorite way to despill when Master Keyer lets you down. Blue screen. Grab 3 Mono nodes. Set one to Red, one to Green, one to Blue. Comp Max the Red and Green. Comp Min the Green and Blue. Then feed the Comp Max into the Combine Red Channel, the original Green into the Combine Green Channel, and the Comp Min into the Combine Blue Channel. Boom. Green screen. Grab 3 Mono nodes. Set one to Red, one to Green, one to Blue. Comp Max the Red and Green. Comp Max the Green and Bl… --- _[View the full topic](https://forum.logik.tv/t/noob-greenscreen-maths-question/3955)._