Return-Path: Received: from mout.perfora.net ([74.208.4.194] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP id 4654631 for AE-List@media-motion.tv; Wed, 14 Mar 2012 03:35:30 +0100 Received: from mbp-17.westell.com (50-50-213-224.waus.wi.frontiernet.net [50.50.213.224]) by mrelay.perfora.net (node=mrus0) with ESMTP (Nemesis) id 0Lvlo4-1SOPLD3d1w-017czX; Tue, 13 Mar 2012 22:42:37 -0400 From: Steve Oakley Mime-Version: 1.0 (Apple Message framework v1257) Content-Type: multipart/alternative; boundary="Apple-Mail=_1679A412-42BC-46D6-85E4-712033553B76" Subject: Re: [AE] shooting greenscreen & camera 'detail' Date: Tue, 13 Mar 2012 21:42:35 -0500 In-Reply-To: To: "After Effects Mail List" References: Message-Id: <90F62948-FCC6-4248-A37B-4A43DD6BA9E2@practicali.com> X-Mailer: Apple Mail (2.1257) X-Provags-ID: V02:K0:LqQnjzucjItU7zhF3t9bUqiY8QeXwT3EI6U+/YpVYtT XUQo/B6dkDBSG9jmy72SzgEZvsf1gKYMn0uD+2imHY41eDmz46 UWhXfl1SvLp9wyRXmxYkzOROGJUPMK3UlWIrgAAeoxHJFR0xUn 9RqkIybjI8OchbWuOC5pLpkux1dF/l/MGbDe6bVjilEHUC392/ NlSiUuulUxggoiclsXzD+ftMWQ3z2m1/i+PWJU5P2TN8WX3Xt0 sS8rQ3JcAe7BTpJdL53CD3b8L9Stz2mutLx691t5lull0OM+Zr BBlr0/ErxIgm6TwoZ1ONfgAtA1o4gkMmUn7L7QcHUwLLT/ZZGy 4EOOLKzcnVzksNZZMSHQP51LWq8Ef+NbmWRt95NDQsJfMq4q3g KXPhIQho0f6mA== --Apple-Mail=_1679A412-42BC-46D6-85E4-712033553B76 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=windows-1252 as both DP and compositer, I'll disagree. turning detail off leads to = mush on your main image, and your key edges. you can always manipulate = edge softness and spill reduction after the fact with all the real = keyers out there. a soft edge makes for less goodness. this is = especially true in more compressed formats in 4:2:0 color space detail level also REALLY depends on your camera, filtration ( if any ) = and lens choice. you HAVE to shoot tests if you don't know the camera = very well. a couple quick tests will tell you what will or will not work = for the particular camera you have.=20 ideally for key work you shoot at 4K and low compression, but even 1080 = low compression will work... I've even had good keys sometimes from EOS = cameras. it so very much depends on several factors.=20 clearly your camera with detail at 0 / default is probably not great.... = so instead of saying default on, or completely off, I'm going to guess = that -50% is probably the sweet spot for sharpness vs any coring = artifacts S On Mar 13, 2012, at 9:32 PM, Chris Meyer wrote: > The general advice is to turn off any "detail" or sharpening parameter = when shooting greenscreen. The function of that feature is often to = harden edges, and you want nice, naturally soft, antialiased edges to = create nicer matte lines when you key your shot and place it over = another. >=20 > Unless "conventional wisdom" has changed the past few years (I haven't = done a lot of keying lately). > =20 > - Chris >=20 >=20 >=20 > On Mar 13, 2012, at 5:02 PM, Sharon Etter wrote: >=20 >> hi >> am hoping this is not OT, as it's a part of the whole After Effects = keying workflow - (of which all the variations of Keylight recipes are = incredibly useful) -=20 >>=20 >> when shooting, what do you folks do with your 'Detail' setting if you = have a budget model HD camcorder, i.e. JVC 150? Turn it off completely, = leave at normal default, or some other setting between =961 and -7? We = find a very, very fine 'halo' often appears around lighter areas of the = subject, (in the source footage) often when leaving detail at default, = disabling it totally means no halo, so a cleaner key, but then other = detail you want, i.e. hair has to go too -=20 >>=20 >> just curious what after effects listers do =96 general rules seem to = suggest turning off any sharpening i.e. detail for green screen, but = what love to know what you do? >> ta >> Sharon >>=20 >>=20 >> UTS CRICOS Provider Code: 00099F >> DISCLAIMER: This email message and any accompanying attachments may = contain confidential information. >> If you are not the intended recipient, do not read, use, disseminate, = distribute or copy this message or >> attachments. If you have received this message in error, please = notify the sender immediately and delete >> this message. Any views expressed in this message are those of the = individual sender, except where the >> sender expressly, and with authority, states them to be the views of = the University of Technology Sydney. >> Before opening any attachments, please check them for viruses and = defects. >>=20 >> Think. Green. Do. >>=20 >> Please consider the environment before printing this email. >=20 --Apple-Mail=_1679A412-42BC-46D6-85E4-712033553B76 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=windows-1252 as = both DP and compositer, I'll disagree. turning detail off leads to mush = on your main image, and your key edges. you can always manipulate edge = softness and spill reduction after the fact with all the real keyers out = there. a soft edge makes for less goodness. this is especially true in = more compressed formats in 4:2:0 color space

detail = level also REALLY depends on your camera, filtration ( if any ) and lens = choice. you HAVE to shoot tests if you don't know the camera very well. = a couple quick tests will tell you what will or will not work for the = particular camera you have. 

ideally for = key work you shoot at 4K and low compression, but even 1080 low = compression will work... I've even had good keys sometimes from EOS = cameras. it so very much depends on several = factors. 

clearly your camera with detail = at 0 / default is probably not great.... so instead of saying default = on, or completely off, I'm going to guess that -50% is probably the = sweet spot for sharpness vs any coring = artifacts

S

On Mar 13, = 2012, at 9:32 PM, Chris Meyer wrote:

The general advice is to turn = off any "detail" or sharpening parameter when shooting greenscreen. The = function of that feature is often to harden edges, and you want nice, = naturally soft, antialiased edges to create nicer matte lines when you = key your shot and place it over another.

Unless = "conventional wisdom" has changed the past few years (I haven't done a = lot of keying lately).
 
 - = Chris



On Mar 13, = 2012, at 5:02 PM, Sharon Etter wrote: