Image 2 of 5: View of Half Dome from Glacier Point. 800mm lens at full zoom. Note hikers on top.
Image 3 of 5: You can just barely make out a figure on the tip of the Half Dome ledge called the "Diving Board"...
Image 4 of 5: This is an enlargement of the same frame showing the person standing on the diving board. This is Maryellen having another hiker take her photo with her camera.
