Archived posting to the Leica Users Group, 2001/02/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]John, Coluld you please send me the Word file? Thank you in advance, Mark Davison Seattle WA - ----- Original Message ----- From: "John Collier" <jbcollier@home.com> To: <leica-users@mejac.palo-alto.ca.us> Sent: Friday, February 09, 2001 3:46 PM Subject: Re: [Leica] DOF: Depth of Field article online > Thank you Martin, > > Unlike B.D., you are indeed a god. > > John Collier > > The captions under the two photographs read: > > Taken with a 50mm lens at f/2 > > Taken with a 135mm lens at f/5.3 > > The descriptive text under that reads: > > Depth of field is the same when two cameras are used side by side at lens > apertures of the same diameter (in this case 25mm), and the principle > subject is enlarged to the same size in both pictures. > > If anyone would like the original word file which will enable you to read > the equations easier, let me know off list and I will email it to you. > Please bear in mind the file size is 1M. > > > > > From: Martin Howard <howard.390@osu.edu> > > > > > > John Collier has been kind enough to type up relevant parts of the article > > on camera optics from the 15th edition of the Leica Manual. I've created an > > HTML page from his Word file and placed the result online: > > > > http://www.ida.liu.se/~marho/dof/dof.html > > > > Two of the figures (fig. 10 and fig. 15) are a bit too small to read in the > > article: clicking on them will open up the image at full size. > > > > M. > > > > -- > > Martin Howard | > > Visiting Scholar, CSEL, OSU | "That's sad, but that's poker." > > email: howard.390@osu.edu | > > www: http://mvhoward.i.am/ +--------------------------------------- > > > > >