Never so much as bumped it. (Yet) The wierd thing is with 70mm and longer lenses I can manual or auto focus with little problem. Only the shorter ones, which should be easier to focus, give me frequent trouble. And as far as wide open goes I just took 6 shots with the FA50/1.7 at F8 and as near as I can tell (with the increased DOF) focus was spot on each time. As far as the manual shots being worse, the in- focus indicator agreed with my eye every time.
Wierd! :-/ I need to take the 5n out and see if I'm blind, or what. Don > -----Original Message----- > From: Paul Stenquist [mailto:[EMAIL PROTECTED] > Sent: Saturday, April 16, 2005 11:27 AM > To: [email protected] > Subject: Re: ist-D Focus Woes, Please Help! > > > Hmmm. Well, the autofocus shots are a lot closer than the manual focus > shots. Other than that, it's hard to draw many conclusions from this. I > guess you should have your camera checked out. It seems to be causing > you a lot of problems and aggravation. Since the autofocus shots are > closer than the manual, I suppose the mirror is a suspect. Have you > ever dropped the camera? > Paul > On Apr 16, 2005, at 11:46 AM, Don Sanderson wrote: > > > http://www.donsauction.com/pdml/50web/index.htm > > > > This is a small gallery of 11 shots I took this morning. > > The last one (FocusPoint.jpg) shows the point I had > > the camera, in spot focus mode, aimed at. > > The first 5 (141-145.jpg) are manually focused shots > > taken with the A50/1.4 at 1/2000 and 1.4. > > The next 5 are taken with the FA50/1.7 at 1/2000 and > > 1.7. I allowed this lens to autofocus. > > Mounted on a solid tripod, on concrete, > > 2sec mirror prefire. > > Focus wanders all over. > > > > Technique the same for all, hold my hand in front of > > the 1.7 to de-focus, allow it to focus and shoot. > > The 1.4 I manually de-focused, re-focused and shot. > > Shot as large .jpg, cropped and 'auto-levels' in PS > > Elements. No sharpening in-camera or in PS. > > Gallery created in Elements. > > > > This seems to happen frequently with any 50mm or > > shorter lens, especially wide open. The problem > > is probably just more evident with shallow DOF. > > > > ***ALL of the shots looked sharp in the viewfinder!*** > > If they didn't because AF 'missed' I de-focused and > > tried again. > > > > Any ideas? I thought maybe the mirror wasn't > > returning properly each time, throwing the > > viewfinder image off, that doesn't look to be > > possible though. > > > > *****HELP!!!!**** > > > > Don > > >
