what's the best process to go through to ensure you make the correct adjustments? Is it just trial and error or is there a specific test procedure you go through?
Cheers guys
bluesbreaker63 Mostly Lurking 15 posts Joined Jun 2006 Location: Cheshire, England More info | Feb 01, 2008 13:25 | #16 what's the best process to go through to ensure you make the correct adjustments? Is it just trial and error or is there a specific test procedure you go through? 1D MkIII, 30D, 16-35mm f2.8L II, 18-55mm EFS, 24-105 f4L IS, 180mm f3.5L Macro, 100-400mm f4L IS, Speedlite 580EX plus other bits and bobs.
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BenDaniels Senior Member  950 posts Joined Oct 2006 Location: East Preston, West Sussex ,England More info | Feb 01, 2008 13:39 | #17 It sounds complicated?!
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scot079 Goldmember  3,839 posts Likes: 1 Joined May 2007 Location: Maryland USA More info | Feb 01, 2008 13:53 | #18 From The-Digital-Picture.com...this is the way i did it. Works better than the 45 degree angle method IMO There are many ways to focus calibrate a lens to the 1D III, but they all have the same goal - find the sharpest setting for the combo. Under good light, setup a flat focus target with obvious, contrasting lines/patterns (a newspaper, print, poster or similar printed item will work fine). Lock your camera onto a good tripod at the distance you would be most likely to use the lens at (optimally) and aimed directly at the flat focus target. Get your exposure setting correct at the lens' widest aperture (makes evaluating the test pictures easier). I select center-point-only for my focus point and use the 2-sec self-timer drive mode (optimally with mirror lockup engaged). Then, go into the menu to C.Fn III-7 AF Microadjustment (Custom Function Menu III, function 7). Select "2:Adjust by lens". Then shoot a test shot from a -20 setting to a +20 setting using increments of 5 between each shot. Then load the pics into a computer and determine which 2 settings were sharpest where the focus point was placed. Now shoot the test again using the 6 settings between and including these two settings - adjust by 1 between each shot. Determine which setting was optimal using the computer and make it the final setting for the lens. Repeat the focus adjustment process for the rest of your lenses. - Tim
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CyberDyneSystems Admin (type T-2000)  More info | Feb 01, 2008 13:56 | #19 I think you have that lens dialed in! GEAR LIST
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Feb 01, 2008 13:57 | #20 bluesbreaker63 wrote in post #4830823  what's the best process to go through to ensure you make the correct adjustments? Is it just trial and error or is there a specific test procedure you go through? Cheers guys There are some directions on the Canon Digital Learninng Center (White Pages)
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bluesbreaker63 Mostly Lurking 15 posts Joined Jun 2006 Location: Cheshire, England More info | Feb 01, 2008 14:21 | #21 Cheers 1D MkIII, 30D, 16-35mm f2.8L II, 18-55mm EFS, 24-105 f4L IS, 180mm f3.5L Macro, 100-400mm f4L IS, Speedlite 580EX plus other bits and bobs.
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Jannie Goldmember 4,936 posts Joined Jan 2008 More info | Feb 01, 2008 17:06 | #22 Wow, I wish my setup was that sharp, I've spent a lot on my three zooms and 5D hoping for the best but it's nothing like that, wow. Ms.Jannie
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Feb 01, 2008 17:13 | #23 Here's the device I use to micro-adjust. It works perfectly.  HOSTED PHOTO please log in to view hosted photos in full size.
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Jannie Goldmember 4,936 posts Joined Jan 2008 More info | Feb 01, 2008 18:17 | #24 Okay I just took my 5D and one of the lenses, put it on a tripod, locked up the mirror when I shot and used a cable release and turned off the image stabilizer and I tried with and without the B&W filter. Ms.Jannie
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Jannie Goldmember 4,936 posts Joined Jan 2008 More info | Feb 01, 2008 18:19 | #25 Okay that makes sense both ways to check the front/back focus, I could do that on a ruler as well. Ms.Jannie
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Feb 02, 2008 09:30 | #26 Jannie: Your 5D doesnt have AF microadjust capability.
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datadump Goldmember  1,932 posts Joined Oct 2007 Location: Canada More info | Feb 02, 2008 09:41 | #27 i tried to adjust all my lenses with that famous 45degree angle method with the focus chart but as much as i tried to be accurate/precise with the methodolgy, my lenses sucked thereafter. so i just started shooting real objects and i got better results.. datadump
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datadump Goldmember 1,932 posts Joined Oct 2007 Location: Canada More info | Feb 02, 2008 09:43 | #28 Jannie wrote in post #4832531 Okay I just took my 5D and one of the lenses, put it on a tripod, locked up the mirror when I shot and used a cable release and turned off the image stabilizer and I tried with and without the B&W filter. Jannie with/without the filter... u saw any diff? i never thought of that datadump
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