Condensation in me Lens

[padraig conaty]

Hi there,
This happened for the second time the other night when i went to shoot. the condensation was on the inside of the front glass. A bit scary as it meant i couldnt shoot. Whats the prognosis and diagnosis for this?

Thanks guys

Also, quick question!

Redrock Micro M2.
Whats the stop loss with one of these guys?
Met a guy whos selling one and im quite tempted. How are they overall?

Again thanks!