The idea of being watched, or an issue regarding privacy.
Attention or focus (or a fear of it or desire for it).
A desire to preserve or remember an experience.
Security or proof.
Someone taking your picture or videoing you against your will can represent a feeling or fear of someone compromising your boundaries.
A photo or video taken without your awareness can represent a feeling or fear of boundary violation, victimization, betrayal, dishonesty, or manipulative motives.
See also: Photo; TV, Being On... camera dream meaning