Archived posting to the Leica Users Group, 2014/03/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]never was bothered by the 35/1.2 on an M8 about half of these galleries are with the combo <http://cartersxrd.net/Site/Shoebox_2014/Pages/SidecarSocialClub.html> <http://cartersxrd.net/Site/Shoebox_2014/Pages/WickedMojos.html> Ric Carter www.CartersXRd.net http://www.facebook.com/ric.carter ?When you don?t shoot color, you don?t have to worry about color.? ? Jay Hunter On Mar 13, 2014, at 5:57 PM, grduprey at mchsi.com wrote: > My 35/1.4 Summilux pre-asph lens works great on my M8. Have not noticed > any focus shift. > > Gene > > ----- Original Message ----- > From: "Nathan Wajsman" <photo at frozenlight.eu> > To: "Leica Users Group" <lug at leica-users.org> > Sent: Thursday, March 13, 2014 3:54:31 PM GMT -06:00 US/Canada Central > Subject: Re: [Leica] Is it just me, or are these new Leica lenses a huge > step up? > > Hi Peter, > > I don't have the CV 1.2/35mm anymore. My main lens on the M8 is the > 2.5/35mm Leica, and I have not noticed any focus shift with it. But as I > said, maybe I am just not looking for it. I don't doubt that the > phenomenon exist; I am just saying that it does not seem to be relevant > for the kind of photography I do. > > Cheers, > Nathan > > Nathan Wajsman > Alicante, Spain > http://www.frozenlight.eu > http://www.greatpix.eu > PICTURE OF THE WEEK: http://www.fotocycle.dk/paws > Blog: http://nathansmusings.wordpress.com/ > > YNWA > > > > > > > > > > On Mar 13, 2014, at 9:36 PM, Peter Klein wrote: > >> Nathan: All lenses have focus shift, but some more than others. The >> original 35/1.4 ASPH without the floating elements is one, and it is my >> principal lens on my M8. At f/1.4 and f/2, the RF is accurate. At >> f/2.8-5.6, the actual point of focus is a bit behind where the RF says it >> is. At f/8 and smaller, the DOF covers things. I confirmed this with >> testing, but it was pretty apparent without testing. So if I want to >> shoot it at f/2.8-5.6, I focus a little closer than I actually want. It >> bothers me to have to do it, but the lens is so good otherwise that I put >> up with it. >> >> IIRC, you are using the Voigtlander 35/1.2 on your M8. That lens handles >> focus shift in a very sneaky way. As you stop down, the actual focus >> point oscillates back and forth around the point the RF is focused on, >> but only very slightly. You can see it if you pixel peep, but not in real >> life. When I first tested my 35/1.2 on the M8, I did pixel peep, and I >> couldn't believe my eyes. I repeated the tests, same results. So I asked >> Erwin Puts about it. He confirmed my observations. Erwin said that what >> the Cosina designers did is a less expensive way of minimizing focus >> shift, but that Leica would never do it that way, because there are some >> other optical drawbacks to it (I think involving contrast). >> >> So for all practical purposes, your normal M8 lens doesn't have focus >> shift. So you don't notice it. :-) >> >> --Peter >> >> >> >>> I have never seen any focus shift on my M8 with any of my lenses. >>> Perhaps I >>> don't know what to look for. Heck, I just take pictures. >>> >>> Cheers, >>> Nathan >>> >>> Nathan Wajsman >>> Alicante, Spain >>> http://www.frozenlight.eu >>> http://www.greatpix.eu >>> PICTURE OF THE WEEK: http://www.fotocycle.dk/paws >>> Blog: http://nathansmusings.wordpress.com/ >>> >>> YNWA >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information