Archived posting to the Leica Users Group, 2007/04/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Frank, see my earlier reply to Len. My mistake. I was thinking of SLR focusing. Two separate issues, aren't there? Does the lens agree with the rangefinder? With no movement of the focus ring, does the point of sharpest focus remain the same as the aperture is varied? Cheers Hoppy -----Original Message----- Subject: Re: [Leica] Focus shift on 50/1.4 Nikkor on M8 How could this be the case on a rangefinder camera? cheers Frank On 2 Apr, 2007, at 00:22, G Hopkinson wrote: > OK, well I think that may add another variable. The focus point may > not be identical if you change the aperture AFTER focusing. I > thought that the back focus (or front focus) issue was when the > rangefinder was coincident, at the shooting aperture, but the image > has a different point of sharpest focus? This error would be most > visible with large apertures, and closer subjects, due to the > inherent lack of DoF? > > Cheers > Hoppy _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information