Here is a tidy little graphic from lundphotographics.com. I can't attest to the correctness of the sensitivity info, but if it is correct then the collodion is sensitive to blue and blue/violet with diminishing sensitivity towards the infrared and ultraviolet ends of the spectrum. True UV begins around 400 +/-, so the collodion does not look fabulously sensitive to UV light. The glass of the lens itself may absorb a bunch of UV as well, which would make it even less of a factor. I am not a wetplate practitioner so don't take this as gospel.

J


Quote Originally Posted by johnielvis View Post
General knowledge seems to say that wetplate/collodion is very sensitive to UV light and not to visible light... is leading me to believe that wetplate is not so sensitive to UV as it is much much more to blue and blue only.