Return-Path: Received: from spike.lmi.net ([66.117.140.17] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP id 4879951 for AE-List@media-motion.tv; Tue, 23 Oct 2012 22:03:21 +0200 Received: from [10.0.1.52] (c-71-198-249-239.hsd1.ca.comcast.net [71.198.249.239]) by spike.lmi.net (Postfix) with ESMTP id 27076154020 for ; Tue, 23 Oct 2012 13:05:56 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Apple Message framework v1084) Subject: Re: [AE] Tracking point suggestions for CRTs From: Brendan Bolles In-Reply-To: Date: Tue, 23 Oct 2012 13:05:55 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: To: "After Effects Mail List" X-Mailer: Apple Mail (2.1084) On Oct 22, 2012, at 3:36 PM, Brian Maffitt wrote: > Add is your best bet for this, or maybe screen, but in either case = you'll want to add a levels effect to the layer to control the = reflection strength and contrast. One thing about Screen is that it never gives you a white pixel unless = one of the inputs is itself white. If you have an 60% white reflection = over an 60% white graphic, the output from Screen will be 84% white = while the output from Add will be 120% (which will clip to 100% on = output). If realism is your goal, you really want those reflections to = blow out to full white as they would in the real world. But as I said, you might find Add to be too aggressive unless you're in = linear space. Screen is a hack to do an add-like thing in video space. Fun fact: the real origin of Screen is that it's the transfer mode used = on the alpha channels. Brendan=