Archived posting to the Leica Users Group, 2005/08/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]How do you come to a CoC of 1/1000, thus 0,001? My very handy hyperfocal chart takes 0,03, thus 1/33, as CoC, making a difference per type of camera (see http://www.vividlight.com/articles/3513b.htm and http://www.vividlight.com/pdf/hyperfocal.PDF) What determines these numbers? > From: Marc James Small <msmall@aya.yale.edu> > Reply-To: Leica Users Group <lug@leica-users.org> > Date: Tue, 30 Aug 2005 13:10:14 -0400 > To: Leica Users Group <lug@leica-users.org> > Subject: Re: [Leica] Hyperfocal Focusing > > At 10:54 AM 8/30/05 -0400, Chris Saganich wrote: >> Thanks I didn't realize that was an inch to mm conversion, obviously >> correct, but the millimeters to meters doesn't seem right. When I do the >> calculation I'm off by a place. Isn't 1166 2/3 mm 1.166 meters rather >> then >> 11.66 meters? > > > Ah! You are correct on that one. 1 1/6m would be the hyperfocal distance > for a 35mm lens at f/3.5 with a circle of confusion of 1/1000". That works > out to about four feet, meaning that everything between 2 feet and infinity > should be in focus. > > Marc > > msmall@aya.yale.edu > Cha robh b?s fir gun ghr?s fir! > > NEW FAX NUMBER: +540-343-8505 > > > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >