Archived posting to the Leica Users Group, 2006/06/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 10:23 AM -0700 6/15/06, Frank Filippone wrote: >Hold on Henning..... > >As far as Olympus goes, I have no idea. > >I said ( or meant, whichever applies) that the new lenses could and >should be smaller.... the 50's, 75's, etc. The Retrofocus WA >lenses will need "more" glass. But making the sensor smaller means >that the lens does not need to throw the same image circle. For lenses to be optimized for digital use, smaller doesn't work as I explained. If anything, larger is necessary. If you're going to design lenses right now for the film and digital M's, you would certainly make sure they work properly on the DM. Therefore... Have you seen the 35-100 Oly lens? No smaller than the 70-200 Canon. Yes, the Oly is f/2, but that is necessary to compete on an speed/noise level with Canon et al. An f/2.8 lens of otherwise similar quality and specs would not be much smaller, as the exit pupil would still be the same size, and that is one of the things that is really important in lenses for digital. The Sigma 30/1.4 is significantly bigger than the Canon 50/1.4, even though it covers a smaller sensor and has a smaller entrance pupil. >That makes the lens POTENTIALLY smaller, lighter, etc.......( I >should have said potentially) regardless of design methodology. IF the lens were designed for film. As it won't be, the lens will not be smaller. The Olympus lenses are a good example. I've seen other high end lenses designed for digital by companies such as Fuji and Zeiss, and the higher the quality they want to achieve, the larger they get. >Will they actually be smaller, lighter, etc? I have no idea. > >Will they work with a M-Film camera? Don't know. Is Leica >promising this? Apparently they are. Yes. >These are marketing and business decisions. Engineering follows >that marketing choice ..... and product follows that engineering >choice. > >What will we actual mortals get? We'll see. > >Frank Filippone >red735i@earthlink.net > > > >_______________________________________________ >Leica Users Group. >See http://leica-users.org/mailman/listinfo/lug for more information -- * Henning J. Wulff /|\ Wulff Photography & Design /###\ mailto:henningw@archiphoto.com |[ ]| http://www.archiphoto.com