Archived posting to the Leica Users Group, 1998/03/05
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>If your image size within the frame (on the film) is exactly the same size >(you are closer to the subject with the 50 than the 90) and you shoot the >50 at f/1, the 90 at f/2, you will have greater DOF with the 90 because it >is at f/2 and the 50 is two stops wider. If you photograph from the same >distance with both lenses (50 image smaller on the film than the 90 image), >you'll have to find some DOF tables to answer the question. > >Jim DoF at 1 meter, 2 meter and 3 meter Noct: 0,99-1.01;1.96-2.05; 2,90-3.11 Summ: 0,99-1,01;1,97-2.03; 2.93-3.07 Erwin