Thanks to all !
I usually used DDM60 during the summer, and I never had any condesation at all. However, I recently used it in, obviously, very wet conditions, so that in 30 minutes everything was completelly wet, including the ddm 60, and I aborted the session. But, It seems now that it was just a bad luck.
I plan to use the DDM60 this winter, so I wanted to be shure that I won't do any harm to my precious.
Once again, thanks to your replies !
regards,
Kruno