Archived posting to the Leica Users Group, 2001/06/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> Frank, > > The depth of field is different with each lens even if they are the same > distance from the subject therefore the perspective is different. Or am I > wrong? Johnny Deadman wrote: the DOF is the same, I think, *when you take into account the magnification*. ====================================================================== AFAIK, the DOF will not be the same if the shots are enlarged to the same size. For example: two shots are taken of the same scene, with 28mm and 35mm lenses, from the same position, with each lens set to the same aperture and the focus of each lens set to the hyperfocal length for that aperture. The shots are then both enlarged to 8x10. The DOF of the shot with the 28mm will appear greater than with the 35mm. However, the magnification of the two enlargements would not be the same, i.e. a particular feature of the scene would be smaller in the 28mm shot than in the 35mm shot. However, if you were to make a bigger enlargement from the 28mm shot, so that the area in the new enlargement covered by a particular feature of the scene was the same as that covered by the same feature in the 8x10 from the 35mm, the magnification of the two would then be the same. The DOF in that new enlargement would appear the same as in the 8x10 print from the 35mm. Am I correct or have I got it ass-backward? Anyone? Austin?? Regards, ===== Ray "The trouble with resisting temptation is you never know when you'll get another chance!" __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/