Quote Originally Posted by hooograa View Post
Incandescent bulbs are resisters in a vacuum as the light bulb burns the filament deteriates thins and produces more light (becomes a higher wattage bulb). When fluresent bulbs age they can glow at the base as the starter ages or gasses thin even after the light is turned off. We live in a constant state of flux.

This is what I was thinking it had happened. it definetely felt that the bulb was brighter. I had more ilumination in the room than I remember from last session (about a month), so even though the coating has not changed or scratched. Can this happen in a short period of time. ?

Either way, I just bought some Kodak Model A with OC filters from ebay. I hope these are good enough for Ilford VC paper.