e.g. galleries, databases, photography of artefacts & events.
There are a number of social media sites that revolve around photographic content. This might include user generated content or professionally produced content that is shared openly with users, all of which encourage users to interact around the images. Some apps even allow users to communicate via the use of images, and the way we interact with photos is changing rapidly at the moment.
Some sites allow you to share your own images or to access images for use in other content you may be producing. As the permissions and copyright on images may vary from site to site and user to user it is also important to check these out before using someone else's image. You may also want to consider using Creative Commons Search for images, or search for images on sites like Pixabay which offer Creative Commons images for re-use and manipulation.
You can allow students to contribute images to a gallery on Moodle in various ways:
The Database tool is the most comprehensive solution because you can define exactly what information the students should provide. You can also design your own template views of the information.
The database tool also lets you define how many entries the students need to submit before the activity is considered complete. This would enable to you lock other activities until students had submitted an entry to the database.
Databases also let you set how many entries students have to submit before seeing other entries, which may give them further impetus to upload an image themselves.
Try these tools:
The user driven sites tend to be free, but may charge for some premium features.
While some of the professionally driven sites are free, others will charge a subscription fee.