Archived posting to the Leica Users Group, 2012/03/30
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]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. 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>