Archived posting to the Leica Users Group, 2012/03/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On Mar 30, 2012, at 12:30 PM, Richard Man wrote: > I think the proper terms is back focus. > > If the focus point changes as you change the aperture, then it's focus > shift and you are stuck. You can then decide to calibrate to an aperture > that makes the most sense to you, usually at wide open and hope the DoF > will cover for any errors in narrower aperture. > > Certainly I would do that. It's hard enough to focus at F1. Any type of > back or front focus and you are upping the odd of mis-focused shots. > > I believe this is one of the reasons why the Nocti /0.95 was created. > > You should test out whether it's focus shift. Just put the camera on a > tripod and photograph a yard stick at an angle. Take multiple photos > without changing the focus but only the aperture. thanks Richard, Steve > > On Fri, Mar 30, 2012 at 8:53 AM, Steve Barbour <steve.barbour at > gmail.com>wrote: > >> my Noctilux at f1 shows a small degree of retro/posterior focus on my M9 >> body. >> >> Can I fix this? How? Or should it the M9 body plus/minus the lens be sent >> to Leica for ideal calibration? >> >> >> to New Jersey or Solms? >> >> >> many thanks, >> >> Steve >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > > > -- > // richard <http://www.richardmanphoto.com> > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information