I am looking to do some UV only photography with tropical frogs. We ran some test shoots using an old interfit EX150 flash light, Camera was a full-spectrum modified Nikon D2x and a Nikkor 50mm f1.8 AF-D lens, some photos taken with a PK-13 extension tube. Attached to the lens was a B+W F-Pro Infrared Cut Filter, and a BG-40/BG39/BG38/UG-11 UV Pass Filter. The next steps would be to find a standard. 

Would titanium oxide and carbon black be good substitutes for the expensive reflectance standards? Would I then need to measure the reflectance and could I do this with a spectrometer or would that only give me absorbance? I am also wondering if I would need to standardise the light source, is this possible with a flash and how would I do this?

Many thanks in advance,


using titanium oxide
Cedric van den Berg Changed status to publish April 2, 2024