Quick online search yielded interesting information. Shining UV light on many objects just results in reflected UV light, so lenses with coatings that reduce UV light (or "clear" UV blocking filters often used to protect lenses from mechanical damage) may interfere with that kind of UV imaging. Apparently it is possible to purchase lenses designed to let UV light pass.
For other objects, UV light stimulates that glowing effect, so the glowing colored light radiates from the subject at non-UV frequencies. Then the issue is having a dark enough environment and long enough exposure to record the images (like the flower pictures in your link). However, cheap UV lights reportedly often emit lots of normal wavelength light that can dilute the glowing colors. Sources of pure UV light and brighter UV light exist, but the ones I could find are several hundred dollars.
My conclusion is that it would be worthwhile experimenting with the cheaper UV sources to see what can be produced before thinking about getting more expensive apparatus. Definitely looks interesting.
Edited to add: Found a forum specializing in UV Photography. Seems to have good info. UV Photography link Also, some UV wavelengths can be harmful, so UV blocking goggles and other precautions may be important if using strong sources.
Message edited by author 2018-09-28 23:27:16. |
