Archived posting to the Leica Users Group, 2013/05/20
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Ditto with the 100 APO Macro and the 35-70/4. Since moving from the R8 to digital, that is one thing I have yet to get use to; the need to stop down to get decent results from a lens I have paid over 1 grand for. Probably a factor in that I am mostly using Nikon zoom lenses, but the Leica 35-70/4 performs exceedingly well wide open. My Nikon 24-120/4 needs to be at f-11 on the long end to give any satisfactory results. Forget f-4, or f-5.6 or even f-8. Yet, my eyes have reached a point that for anything not very static, I cannot focus manually with any kind of a success rate in the viewfinders designed for these new cameras. Even if I glance at the focus conformation light if there is time, the hit rate wide open is fairly poor. There is too much slop in that light for manual focus wide open. So I tend to use the Leica glass for stationary things only. Darn 62 year old eyes..... Aram -------------------------------------------------- From: "Doug Herr" <wildlightphoto at earthlink.net> Sent: Sunday, May 19, 2013 6:05 PM To: "Leica Users Group" <lug at leica-users.org> Subject: Re: [Leica] Mark's 5.6 and be there > Mark Rabiner wrote: > >>If you've looked at those lens test charts they used to always had in Pop >>and Modern photography monthly for decades we all did a lens always get a >>bit better contrast and resolution stopped down two or three. Its just the >>nature of optics. > > It's how the lenses were designed. They don't have to be designed that > way. Use an R APO-Telyt at full aperture and everything you "know" about > optics will be obsolete. I use the diaphragm for DOF control and exposure > control. Stopping down one or two stops for optimum performance does not > apply to the best lenses. > > Doug Herr > Birdman of Sacramento > http://www.wildlightphoto.com > > > >