Testing multiple UV lightsources and their color rendering pt. 2

[Fandyus]

As you might have noticed, my previous post of this nature did not include any UV-yellow objects, so I grabbed a rudbeckia and did some more testing.

 

There's a leak that could be seen in the dark center of the flower. I was quite surprised by this as I had my stack for quite a good one. But I suppose incandescent light sources are pretty extreme anyhow, once I get my TSN575 filter I will try again. I ordered it a hour or so ago. I want to use it to image a candle flame or other types of fire such as a campfire. Should work pretty well.

Lastly, I decided to do a GBUV trichrome just for fun. It looks quite nice. The bubblegum pink is interesting for sure.

I also have been wating for over two months now for my step rings to arrive so that I could glue them to my Lomo T-43 triplet lens and mount it on a helicoid, perhaps it will have even better UVB transmission than the Soligor.

[Andy Perrin]

Halogens put out massive IR relative to UV and usually are a poor choice for UV imaging because they push filters to the edge, as you discovered. They are a great choice for IR imaging though! 
 

The tests here and on the other set are really for the combination of the filter and light sources, not just the sources. A filter or stack with a different peak will probably have different color results.