Condensation

[Philh]

Sorry,wrong section

[arthurking83]

Sorry Phil, I have no idea either... but usually condensation is formed by the change in temperature/humidity and not just the tmeperature itself(whether hot or cold)
So the moral of this is to acclimatise the gear for a bit, maybe clean the condensation off after some time... maybe 10 minutes or so?.... I have no idea on how long is a reasonable time to wait!

Today I was at the botanical gardens, went into the tropical glasshouse and of course the change in temp/humidity fogged up the lens instantly. I loitered about for about 10 minutes or so, and it seemed to stop misting up. By then I wanted out.. it was way too humid for me. All I did was to wipe the lens with a cloth and it looked fine. Wiping the viewfinder was harder though.

If you have to drive to this point where you prefer to take your long exposure shot, remember if it's cold out and you have the heater on in your car, this could be a factor for the fogging up.

[Philh]

Thanks Arthur, I'll give that a try. Cheers.

[enduro]

I can't see the OP ... been edited ...

anyway,

Occurrence of condensation (dew point) is relative to temp, air pressure and humidity. If the temperature or air pressure drops, then the available humidity (water vapor) condensates (drops from the air) and may form on the coolest subject (milk bottle or your lens).

[Seesee]

I'm guessing this is one of the main factors that creates mould in lenses...or even worse mould on a sensor, something to be wary of I would think.

[enduro]

I'm guessing this is one of the main factors that creates mould in lenses....

Yeap.

In my opinion, one should check for mould on lenses at least twice a year.