I lost the lenscap for my kit lens back in september on a shoot and still dont' have a replacement. Then I started shooting with primes and haven't used the lens for 2 months.
I just left it in my photo drawer lens up.
Today I looked at it and the fron element has about 20 spots of fungus growing there.
Apparently - the lens caps protect the lens from fungus... which makes sense. The fungus from the air simply doesn't land there.
)

