[wilsontamkh]

I read this from a website:
"Don’t bring a lens in from extreme cold … the moisture inside will instantly freeze up the whole lens. It is best to carry the camera under your winter coat when not in use." (photographycourse.net)

That makes me think about: when we go travelling, we may visit some attractions like 'Icy world' which let visitors experience the freezing cold. How should we take care of our DSLR when we enter and leave?