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Hi Austin
When taking photos with my camera at night, I make sure that the lens hood is fitted and I also may use a dew heater strap on the really humid nights.
The lens hood by itself will reduce the onset of dew but will not stop it on those really dewy nights. Telephoto lens hoods are far more effective than wide angle lens hoods because they are deeper.
A dew strap is basically a (lightly) heated (insulated) electrical heater wrapped around the lens body/hood with power being supplied either by an appropriate mains adapter or battery. The slight heating provided by the dew strap is sufficient to keep the optics dry. You don’t have to make the lens hot!
Do a Google search on “dew straps” for further information. BinTel stock the Kendrick series I think, which I have been using successfully and satisfactorily for over 10 years on my various set ups.
Cheers
Dennis
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