Interesting...

I wouldn't want to do this myself since the color head would be a larger diffuse light source then the Thorn lamp. My interest based in my own results is to move more to a point light source condensor ultimately. A point light source condensor would afford the greatest sharpness and local contrast of any light head. Additionally a 100 watt lamp would be too weak for some of my work. I have had 4 minute exposures when using a grade five filter and large enlargements with the 300 watt lamp. My thinking is to be up around 1000 watts.