Archived posting to the Leica Users Group, 1998/08/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Richard Clompus wrote: > > My question: Does the 75/1.4 M lens provide a significantly more narrow > depth of field for portrait work than the 90/2.0 when both lenses are > used with their maximum apertures? Jonathan Eastland's book "Leica M Compendium" has tables towards the back which contain depth-of-field information for all Leica M focal lengths and appartures. I'm currently at work, so I don't have the information at hand, but perhaps someone else can provide it. If memory serves me right, I think the DOF is about the same at near distances (1-1.5m), around 2-3 cm. The 75/1.4 has a reputation of very high sharpness and resolution: It may not be the best portrait lens. The 90 Summicron reportedly is slightly soft at the largest apparture and close focus distance: many comment on its flattering portrait qualities. I don't own either lens, so this is only secondhand information, based upon literature and LUG comments. M. - -- Martin V. Howard, Application Systems Laboratory, | Dept. of Comp. & Info. Sci., Linkoping University, | Just DOHH it! SE-581 83 Linkoping, Sweden. Tel +46 13 282 421, +----------------+ Fax +46 13 142 231; marho@ida.liu.se; www.ida.liu.se/~marho