I was shooting a concert this weekend, but ran into a major problem. It has been cold here in the Northwest and the bar where i was shooting was very humid and warm- hence when i got in and ready to shoot my lens was all fogged up. Is there any thing i can do in the future to prevent this?
Thanks!
Once, a million years ago, someone gave me some Amway "Glasses Cleaner" in a little spray shot setup. It's awesome for cleaning lenses / filters and has anti fog built in.
Living in Florida I deal with this all the time (in opposite extremes) due to the over-cranked air conditioning and humid weather. The best thing to do is to think ahead. Try to keep the temperature difference down by (in your example) wrapping your gear bag in extra blankets (in humid climates, keeping the gear from extreme cold ie a/c). Most importantly, arrive early enough to allow for you gear to adjust to the temperature difference as your camera will internally need to acclimatize to your surroundings as well to eliminate fogging up.
I just set my bag, with my camera in it, outside for 15 minutes before I go shoot. I also pack the bag with lots of silica gel to absorb moisture, so my camera is unharmed. Also, I use lens caps when my lens might fog up. Usually I just keep the UV filter on and ditch the lens cap, but something in front of the glass keeps it from fogging up usually.
Humid conditions + cold lens = "fog" on lens. I try to keep my camera and lens warmed up by keeping it next to my body on the way to the locale. I stick the lens in an inner pocket when I can. A little weird, I know; people think I have a chihuahua or something. This seems to help, even in the tropics. YMMV, as they say in Detroit.