« on: October 22, 2013, 10:12:39 AM »
Awesome! Love to see more out of the box DIY ideas like this! Keep it up Surapon! Thanks for sharing!
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Those numbers are for each of my three lights fired in ETTL at a piece of paper on the wall, with white balance drawn from the white panel on my WhiBal card using the tool in LR5; I should have specified. If you want I can try each of them at different power settings.
I shot my WhiBal card and got 5850, 5900 and 6100; That was each light on well-charged AAs and the same setup. 6300 seems a little high but as long as it is consistent then I don't think it is worth much trouble.
Pardon my innocence, but is the 5% difference not academic?
Some lenses just dont focus well on a linear scale. Some need different AFMA settings focused far than focused close. To me that's a manufacturing flaw or the lens is just out of spec and needs adjusting. In those cases you either need to set the AFMA for the distance you use it the most, or split the difference in the near and far AFMA tests and use aperture to increase the DOF and mask the error.