Archived posting to the Leica Users Group, 2001/02/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]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/ +--------------------------------------- > >