Return-Path: Received: from asmtpout020.mac.com ([17.148.16.95] verified) by media-motion.tv (CommuniGate Pro SMTP 4.2.10) with ESMTP id 4625927 for AE-List@media-motion.tv; Tue, 14 Feb 2012 17:51:56 +0100 MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; CHARSET=US-ASCII Received: from [192.168.1.84] ([99.152.153.185]) by asmtp020.mac.com (Oracle Communications Messaging Server 7u4-23.01 (7.0.4.23.0) 64bit (built Aug 10 2011)) with ESMTPA id <0LZE00DBJ74Y5X20@asmtp020.mac.com> for AE-List@media-motion.tv; Tue, 14 Feb 2012 16:58:11 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.6.7361,1.0.260,0.0.0000 definitions=2012-02-14_04:2012-02-14,2012-02-14,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=6.0.2-1012030000 definitions=main-1202140148 Subject: Re: [AE] fluorescent flicker in video From: Jim Curtis In-reply-to: Date: Tue, 14 Feb 2012 10:58:10 -0600 Message-id: <3FEFBB0A-30D4-49B1-BB4D-37A145E5B420@me.com> References: To: After Effects Mail List X-Mailer: Apple Mail (2.1084) I think you went the wrong way, Steve. An exposure of 1/25 of a second would guarantee up to two full cycles, whereas 1/100 could fall in between every other cycle and produce darkness, presuming a square wave light source that's on for 1/25 of a second, and off for 1/25 with no lag. Right? On Feb 14, 2012, at 10:43 AM, Steve Oakley wrote: > you need to shutter the camera at 1/50th or 1/100th in PAL / 50.000hz line frequency countries when shooting 23.976 / 24/ 29.97/30 >