Looking to go to a beautiful beach to take great pictures and relax. Lesser known beach and less touristy.
Mentioned in this answer:
For a different look, not beach, but great for beautiful scenery, try Point Loma - taking the road branching off to the right (to far west side of peninsula across from Coronado) when you come to the national park entrance. It will wind down to a parking lot where you can then walk along the shore and enjoy little cave-like openings and tidal pools as well as paths along the shoreline.