Return-Path: Received: from [64.29.147.233] (HELO mail24c25-2209.carrierzone.com) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP-TLS id 5306443 for AE-List@media-motion.tv; Wed, 04 Dec 2013 02:13:56 +0100 X-Authenticated-User: albion.speakeasy.net Received: from [192.168.1.125] (c-67-185-28-214.hsd1.wa.comcast.net [67.185.28.214]) (authenticated bits=0) by mail24c25-2209.carrierzone.com (8.13.6/8.13.1) with ESMTP id rB41GJIc022570 for ; Wed, 4 Dec 2013 01:16:21 +0000 From: James Culbertson Mime-Version: 1.0 (Apple Message framework v1283) Content-Type: multipart/alternative; boundary="Apple-Mail=_6D615E3D-DEAF-4207-803C-C7B68074296D" Subject: Re: [AE] Green screen challenge question Date: Tue, 3 Dec 2013 17:16:09 -0800 In-Reply-To: To: "After Effects Mail List" References: Message-Id: <5B67F19E-1175-4B65-8D48-D950672AEF12@speakeasy.net> X-Mailer: Apple Mail (2.1283) X-CSC: 0 X-CHA: v=2.1 cv=N5MQSQNB c=1 sm=1 tr=0 a=Y/MgaaCAW/y6DJCnCmasCA==:117 a=Y/MgaaCAW/y6DJCnCmasCA==:17 a=C_IRinGWAAAA:8 a=g0qM3YM6AAAA:8 a=pkvlfqfQKvcA:10 a=A8LQOh1NFgIA:10 a=eVbW6KzvAAAA:8 a=_rHsHQsc_DIA:10 a=bWdBkzTTAAAA:8 a=Y_QvCKRc8sCJwhN_mH4A:9 a=wPNLvfGTeEIA:10 a=CfpVQWkV_roA:10 a=SeXka_JQ__gA:10 a=HZf0qgDPf4XBc6BUsd4A:9 a=KW6kjQFrtFFXXWBI:21 a=_W_S_7VecoQA:10 a=tXsnliwV7b4A:10 a=pyRLwjn-4yEA:10 X-CTCH-RefID: str=0001.0A02020A.529E8265.011D,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 X-CTCH-VOD: Unknown X-CTCH-Spam: Unknown X-CTCH-Score: 0.000 X-CTCH-Rules: X-CTCH-Flags: 0 X-CTCH-ScoreCust: 0.000 --Apple-Mail=_6D615E3D-DEAF-4207-803C-C7B68074296D Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 Teddy, I am definitely using the methods you mention on some of the dark = greenscreen footage with good results (though I am finding that Primatte = works better than Keylight for this batch of footage; I've also got some = of the Key Correct plugs in the mix). But this other stuff I am referencing is a bit darker, and I wondered if = there was an IRE/luminance point of no return... James On Dec 3, 2013, at 4:37 PM, Teddy Gage wrote: > keylight is really magic but it's not very intuitive. The default = values are horrible. There are a few tricks. always add a high contrast = levels / curves in the effects stack first. Then add keylight effect and = grab your matte color. Go and view Screen Matte only in the drop down. = Now go to Screen Matte settings: use ctrl+click+drag to fine tune clip = black and then clip white to get a sharp matte. Soften it a bit and then = play with shrink / grow and roll back. >=20 > Keeping the view in screen matte, duplicate your layer and remove all = effects. Then use the Keylight layer as a Luma Matte above it- this = takes care of spotting >=20 > For really bad motion blur, especially if it's a quick shot, I suggest = you switch to roto brush and refine edge / refine matte and clean it up = by hand >=20 >=20 > On Tue, Dec 3, 2013 at 7:26 PM, James Culbertson = wrote: > I've been given some green screen shot with a 5DmkIII. Hand reaching = across to the back of a TV with prominent shadow: 20 ire to about 15 ire = where the shadows are. Seems like it was shot with higher motion blur = than I am used to like they used 1/30th instead of 1/60th for a 30fps = setting. Of course, lots of noise because it is so dark (don't know what = ISO it was shot with). >=20 > Anyone ever gotten a good key with these light levels using this sort = of camera? I'm having a horrible time and just want to jettison the = whole thing. >=20 > Thanks, James >=20 >=20 > +---End of message---+ > To unsubscribe send any message to >=20 >=20 >=20 > --=20 > VFX & Motion Graphic artist > NEW - teddygage.com >=20 --Apple-Mail=_6D615E3D-DEAF-4207-803C-C7B68074296D Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=iso-8859-1
keylight is really magic but it's not very intuitive. The = default values are horrible. There are a few tricks. always add a high = contrast levels / curves in the effects stack first. Then add keylight = effect and grab your matte color. Go and view Screen Matte only in the = drop down. Now go to Screen Matte settings: use ctrl+click+drag to fine = tune clip black and then clip white to get a sharp matte. Soften it a = bit and then play with shrink / grow and roll back.

Keeping the view in screen matte, duplicate your layer = and remove all effects. Then use the Keylight layer as a Luma Matte = above it- this takes care of spotting

For = really bad motion blur, especially if it's a quick shot, I suggest you = switch to roto brush and refine edge / refine matte and clean it up by = hand


On = Tue, Dec 3, 2013 at 7:26 PM, James Culbertson <albion@speakeasy.net> wrote:
I've been given some = green screen shot with a 5DmkIII. Hand reaching across to the back of a = TV with prominent shadow: 20 ire to about 15 ire where the shadows are. = Seems like it was shot with higher motion blur than I am used to like = they used 1/30th instead of 1/60th for a 30fps setting. Of course, lots = of noise because it is so dark (don't know what ISO it was shot = with).

Anyone ever gotten a good key with these light levels using this sort of = camera? I'm having a horrible time and just want to jettison the whole = thing.

Thanks, James


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