How to steal the camera lens from the photographer's neck

Reminds me of a joke. A group of mice discussed how to deal with the evil cat. A little mouse said I had a good idea. Let's tie a bell around Mao's neck. Wherever he goes, we can know in advance. An old mouse asked, "Who will tie the bell?"

Far away, do you think it is possible to steal the camera lens from the photographer's neck? The lens is stuck on the fuselage, so you have to take it off with both hands, press the button with one hand and turn the lens with the other. In addition, stealing is illegal and you should be detained. If the lens is expensive, you will go to jail.