Circle

A circle has 2 meanings: Difference and Discovery. It has a different frame by having a circular photo rather than a square shape which is common in other social media. The circle shape enables unique interaction, and it looks like discovering something new by telescope.

Moreover, I visualized an interesting effect when users moved to the detailed. As the circle get bigger, the user can see more details of the photo.

You can see the detail in Behance : https://www.behance.net/gallery/31862233/Photo-Social-Network-Service