Andrea B. Posted August 26, 2016 Share Posted August 26, 2016 To better show the possibilities of my four UV-pass test set filters used in the StraightEdge IR-Forcing Test, I tried two different, artistic (I hope!) white balance renderings for each filter. I also pushed the saturation so we could better see what false-colours might be brought out. This effort was not at all meant to be precise or accurately reproducible. I just wanted to play, hoping that readers might feel similarly inclined and come up with some interesting renderings for their own UV photographs. The sunflower leaves are very UV-reflective and take on a very interesting shiny, metallic appearance in UV. This sunflower has a small UV-absorbing patch on the base of each ray which makes a dark ring around the dark central disc. Like every other sunflower I've ever UV-photographed, the rays are UV-reflective and produce a nice bright false-yellow colour. It was a bit windy. So any focusing errors can be blamed on that. [Focusing errors could not possibly be the photographer's fault, could they?? Just kiddin'.] Indeed just before shooting the 4th set, the sunflower pot rolled off its prop and had to be re-propped. There was no hope of matching the original pose, but we all soldiered on. Filters (in alphabetical order) BaaderU StraightEdgeU U360 (2.00mm) + S8612 (1.75mm) U360 (2.00mm) + S8612 (2.00mm) EDIT: 14 Mar 2017 I have the thicknesses of the filters mislabeled on a couple of the photos. The filter thicknesses stated just above are the correct ones for all posted photos using a U-360 + S8612 stack. It was a bad cut-n-paste job! :D In the first white balance set, the Photo Ninja white balance dropper was drug around over the big leaf just under the sunflower. As mentioned, I was not precise and did not intend to be. When the saturation was pushed, golds and greens appeared. Here is a small composite of those four results. Separate larger photos are attached below. In the second set, the Photo Ninja white balance droper was drug from upper right to lower left to produce a kind of averaged white balance. Again I did not intend to make a perfect diagonal drag. This time the saturation push revealed violet-blues and blues. Here is a small composite of those results. Seperate larger photos are attached below. Link to comment
Andrea B. Posted August 26, 2016 Author Share Posted August 26, 2016 Nikon D600-Broadband + UV-Nikkor 105/4.5 + RRS GroundPodf/11 for 1" - 3" @ISO-400White balance on leaf. Link to comment
Andrea B. Posted August 26, 2016 Author Share Posted August 26, 2016 Nikon D600-Broadband + UV-Nikkor 105/4.5 + RRS GroundPodf/11 for 1" - 3" @ISO-400White balance on diagonal (before crop). Link to comment
Andy Perrin Posted August 27, 2016 Share Posted August 27, 2016 I like the last set (WB on the diagonal) the best. I think it's because the blues and yellows do that complementary color thing (or almost complementary -- isn't the complement of blue orange, not yellow?). Link to comment
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