iCloud Photos on Apple TV
To view iCloud Photos on your Apple TV, first open the Settings app. Go to Users and Accounts > [your name] > Photos and turn on iCloud Photos. You can then review your photos and videos by opening the Photos app, navigating to the picture, video or album you wish to view with the remote and then clicking.
T With iCloud Photos active, every photo you take is automatically uploaded to your iCloud account and synced with other Apple devices