i am interested in using cold cathode tubes to create a reshapeable light source.... so i could set up say eight white cathode tubes like spokes in a wheel and use them as a ringlight or a light halo. the cathodes put out a surprising amount of light for how small they are, i was able to shoot this at 1/160th of a second, f 1.8, iso 800....... and this is just one blue and one red cathode. eight white ones would be at least four times brighter, probably more since white is going to be brighter than the colored tubes (they're just white bulbs, with blue striping painted on them to make them blue, or red for red)..... i don't like working at 800 iso, but nik noiseware does a decent job of knocking sensor noise down to manageable levels. see the setup shot for noise levels before noiseware was used.....
setup shot:
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