It was one of the best accessories I ever own now. I was on my feet for 4 hours, shot about 1400+ images with my A99M2 and
did not feel any fatigue at all. Most of the shots are 9 image bracketed shots since it was a bright day and lot of highlights and shadows to contend with.
Info on Mt. Umunhum
https://www.openspace.org/mount-umunhum-sierra-azul
The white stuff you see at the distance is the cloud covering the south end of the Silicon Valley.

The radar tower at the summit of Mt. Umunhum from the start of the trail, about 3.7 miles long each way and gaining about 1600 feet elevation in 3.7 miles to the top.

Silicon Valley. In the distance you see the eastern hills. Between these two ranges of hills is Silicon Valley.









