Comments on: The Lens Align Mk II & the Non-tethered Micro-adjusting Tutorial https://www.birdsasart-blog.com/baa/2012/10/10/the-lens-align-mk-ii-the-non-tethered-micro-adjusting-tutorial/ The blog of bird photographer Arthur Morris Fri, 26 Jul 2013 10:13:58 +0000 hourly 1 https://wordpress.org/?v=6.8.3 By: Arthur Morris/BIRDS AS ART https://www.birdsasart-blog.com/baa/2012/10/10/the-lens-align-mk-ii-the-non-tethered-micro-adjusting-tutorial/comment-page-1/#comment-561373 Fri, 26 Jul 2013 10:12:37 +0000 http://www.birdsasart-blog.com/?p=12091#comment-561373 In reply to Lou Dina.

Hi Lou, I am sure that the answer is yes but am surprised by such dramatic differences. I will alert Micheal Tapes to your question in hopes that he can respond here. best, artie

]]> By: Lou Dina https://www.birdsasart-blog.com/baa/2012/10/10/the-lens-align-mk-ii-the-non-tethered-micro-adjusting-tutorial/comment-page-1/#comment-560795 Thu, 25 Jul 2013 14:25:27 +0000 http://www.birdsasart-blog.com/?p=12091#comment-560795 Thanks for the great article. Have you noticed any difference calibrating a camera under different light sources, specifically comparing incandescent and daylight? Perhaps not since birding involves long lenses for outdoor use. But, I am finding that my lenses focus differently when calibrated under two light sources. So far, I am finding that under daylight conditions, the micro adjustment for my Canon 5Dmk2 needs to move between 6 and 9 points in the negative direction (compared to tungsten calibration).

Anybody else seeing this or understand it? I guess it could be my testing, but I am being very careful, using both a LensAlign mk2 and FocusTune 2.0 software. So far, I have tested three different Canon lenses with similar results: 85/f1.8, 100/f2.8 macro, 25-105/f4L.

If this is true, I have an interesting dilemma, because I do a lot of outdoor and studio portrait photography. In the studio, I use tungsten modeling lights and strobes. Interested to see if anybody knows more on this subject. Not sure where to set my AF microadjustment with the current differences between daylight and tungsten.

Lou Dina

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