JHAG Posted July 18, 2009 Share #1 Posted July 18, 2009 Advertisement (gone after registration) I've used this ruler and lost the file. http://www.l-camera-forum.com/leica-forum/leica-m8-forum/13933-new-backfocus-thread-solution-5.html Has anyone this file somewhere and would kindly re-send it to me ? Quote Link to post Share on other sites More sharing options...
Shootist Posted July 18, 2009 Share #2 Posted July 18, 2009 Yes I created it and if you MP me with your email address I'd be happy to send it to you. Never mind they are attached to this post. The first one, Leica Focus Chart, has small figure 8's and the other, Leica Focus Chart 2, has larger figure 8's. [ATTACH]152736[/ATTACH] [ATTACH]152737[/ATTACH] Quote Link to post Share on other sites More sharing options...
JHAG Posted July 18, 2009 Author Share #3 Posted July 18, 2009 Thank you soooo much. I really appreciate that. Quote Link to post Share on other sites More sharing options...
Shootist Posted July 18, 2009 Share #4 Posted July 18, 2009 Here's another one made to 10x16 so it can be printed on 11x17 paper. [ATTACH]152748[/ATTACH] Quote Link to post Share on other sites More sharing options...
jimleicam3 Posted July 18, 2009 Share #5 Posted July 18, 2009 Could you give us a lesson on the use of this chart? Thanks Quote Link to post Share on other sites More sharing options...
stephengilbert Posted July 18, 2009 Share #6 Posted July 18, 2009 A more sophisticated (and expensive) solution from Michael Tapes, creator of the WhiBal card: Digital Photography - RawWorkflow.com - Michael Tapes: photo news and commentary - LensAlign Long Ruler Kit hasshipped Quote Link to post Share on other sites More sharing options...
JHAG Posted July 18, 2009 Author Share #7 Posted July 18, 2009 Advertisement (gone after registration) You just shoot at an angle of 45° on the main central line. In my case, my last acquisition (75 Summilux) has been adjusted first by DAG, then by Malcolm Taylor in the UK on an optical bench, and still I have it off by around 5 mm (frontfocus). Using it mostly as a portrait lens at close range, it's pretty annoying. Leica should really fix it free for their users. It's unbelievable that lenses are so much front or backfocussing out of the box (granted, some are not, but on a total of 7 lens, I had three that focussed Moscow when I focussed Kiev… Quote Link to post Share on other sites More sharing options...
microview Posted July 18, 2009 Share #8 Posted July 18, 2009 Quite by chance I had just created a template for this… PDF attached. What you do is print at 100% scale on decent paper, eg photo print paper, cut along the fine horizontal lines to isolate the two strips of vertical bars. These are at 14.14mm increments so if set with a vertical cut bisecting the "0" mark red bars and butted together the two halves could be taped, say, to a cardboard box or larger sheet. When the box or mounting board is angled at 45 degrees on plan to a tripod mounted camera with the lens centre on the same horizontal level as the rows of bars, a photo taken using the M8 rangefinder at a given distance (focused of course on the red stripe) will indicate, precisely in 1cm steps, the degree of front/back focus error. Hope all this is clear to those unfamilar with the test method. It's easier to set a box at 45 degrees to a brick wall and have the camera facing the wall than trying to angle a tripod head at 45 degrees to look down on to a flat sheet of paper. The cyan rectangle shows the depth of sensor in relation to the front of the M8 body, for those wishing to try focusing the lens via its peripheral markings with a tape measure to check the camera position in relation to the test sheet Quote Link to post Share on other sites More sharing options...
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