I don't know the laws on this, but from a common sense point of view such activities could be espionage if done as part of an espionage mission but could also n

I don't know the laws on this, but from a common sense point of view such activities could be espionage if done as part of an espionage mission but could also not be espionage is done for other purposes. For instance if you happen to record which naval ships are in a harbor, that's not espionage. If on the other hand you are sending that film to German intelligence in exchange for your income as a German spy the act of taking that film is probably espionage.