Quote Originally Posted by bjorke
Is that really why Adams had a roof platform? I thought it was just to avoid having his view obscured by other viewers/cars (and providing him with a steady workplace most anywhere). The 5-6 foot difference would be pretty miniscule against a mountainside.

Shooting from an elevated platform has many advantages. When using a view camera, the near-far relationship (Adams used this a great deal) can be exploited more effectively without resorting to extremely small lens apertures. Additionally the entire view changes a great deal from an elevated position. From a height of 6 feet the point of diminishment (on the level plane) will be four times nearer then from a height of 12 feet.(equivalent scene and object size). The rear back tilt is most effective from an elevated position.