X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sun, 30 Apr 2006 15:06:53 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m20.mx.aol.com ([64.12.137.1] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1085437 for lml@lancaironline.net; Sat, 29 Apr 2006 09:24:11 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.1; envelope-from=MikeEasley@aol.com Received: from MikeEasley@aol.com by imo-m20.mx.aol.com (mail_out_v38_r7.5.) id q.37d.269b7c4 (3948) for ; Sat, 29 Apr 2006 09:23:20 -0400 (EDT) From: MikeEasley@aol.com X-Original-Message-ID: <37d.269b7c4.3184c2c8@aol.com> X-Original-Date: Sat, 29 Apr 2006 09:23:20 EDT Subject: Image Distortion with Digital Camera X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1146317000" X-Mailer: 9.0 Security Edition for Windows sub 5300 X-Spam-Flag: NO -------------------------------1146317000 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit I checked the Panasonic Manual. The manual says that you can have the shutter speed set as high as 1/2000 with the flash BUT if you have an external flash, it will set it between 1/30 and 1/250. So my guess is the camera will automatically set the flash shutter speed to 1/250 even though it displays 1/2000 when you use the built-in flash (idiot proof design). So if 1/250 is the fastest flash shutter speed, then at 1/500 only half the image is being exposed at a time, 1/1000 would be one quarter, 1/2000 would be one eighth (a very thin slit passing across the image sensor). Base on the distortion in the propeller photo, it looks like your shutter moves top to bottom in the camera, which is bottom to top on the image. Mike Easley -------------------------------1146317000 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
I checked the Panasonic Manual.  The manual says that you can have= the=20 shutter speed set as high as 1/2000 with the flash BUT if you have an extern= al=20 flash, it will set it between 1/30 and 1/250.  So my guess is the camer= a=20 will automatically set the flash shutter speed to 1/250 even though it displ= ays=20 1/2000 when you use the built-in flash (idiot proof design).  So if 1/2= 50=20 is the fastest flash shutter speed, then at 1/500 only half the image is bei= ng=20 exposed at a time, 1/1000 would be one quarter, 1/2000 would be one eighth (= a=20 very thin slit passing across the image sensor).  Base on the distortio= n in=20 the propeller photo, it looks like your shutter moves top to botto= m in=20 the camera, which is bottom to top on the image.
 
Mike Easley
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