Not evasive at all. I'm constantly amazed at the insight of seasoned professionals when they look at my reference photos. I had to rack my brain to remember where the warm light source would have come from because I was sure that I turned the overhead incandescent off. Then I remembered--there was a second window messing with my shadows, which I had attempted to minimize by shutting the blinds. But the blinds (warm in color) still threw off the photo, apparently! Luckily I don't have to use this for a painting.
I am cursed when it comes to controlling my natural light because every room in my house has more than one floor-to-ceiling window and none of them face north. Alas, I may be best off switching to artificial light (eek) and taking the photos at night when I need to control only ONE light source and the reflected light. Of my options, I think this is going to be best until I can figure out a better way to block the other windows from becoming a second, distracting light source.
Thanks for your extended explanation. It made sense to me, too, although my hunch is that it'll make even more sense in 20 years.
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