Another note... I'm reading on the NASA website where Shade 12-14 welding glass is fine for regular viewing... These have zero IR and UV protection. So is a camera sensor that much more delicate than the human eye?
I don't know where you heard that #14 welding glass doesn't block UV. but take a look at the glass code. If the manufacturer conforms to the ANSI/ISEA Z87.1-2010 standard there will be two letters with numbers. WHat your looking for is W14 U6. I believe U6 is 99% UV blocked.

