Archived posting to the Leica Users Group, 1998/03/31
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Eric Welch wrote: > > At 01:28 PM 3/31/98 +0100, you wrote: > >I was wondering. Why is not possible to make > >a f1.0 lens for the R camera, or is it? Has it anything > >to do with the greater distance between the back of the > >lens and the shutter? Or would it just be to expensive. > >Probably a combination of both. > > Focusing would be inaccurate. You need a rangefinder to focus a 50mm 1.0 > lens good enough to be reliable. I suppose they could make a custom screen > for the R8 that is optimized for f/1.0. A split image rangefinder > (simulated, I know) or microprism, but then focusing would be less accurate > at smaller apertures unless one changed the screen. Not an elegant > solution. And the lens would be massive! Such a specialty lens I'm sure doesn't see many sales, even Canon's. And the RF version would be fine, since it wouldn't make sense to use flash at f/1, so you don't need all the meter sophistication of the R. AF for such a lens would probably be more accurate than manual, however. I vote that Leica doesn't worry about it and spends the R&D money on developing a 20-35 zoom f/2.8. donal - -- Donal Philby San Diego http://www.donalphilby.com