I just saw this on the "Know before you go"
Face Coverings
All Guests (ages 2 and up, including those who are fully vaccinated against COVID-19) are required to wear appropriate face coverings indoors, except when in their staterooms or actively eating, drinking or taking a photo (while stationary and maintaining an appropriate physical distance). Face coverings are not required for Guests outdoors while on board the ship and at designated locations. Face coverings may be required in ports of call based on local government requirements.
Maybe that's just when you're taking your own photos? As opposed to the photographers or a CM taking your photo?