Heads Up!

[Drew Phipps]

You don't need photogrammetry to know that the single most important factor in determining the size of an image is the ratio between the size and the distance from the camera. It's called "forced perspectice" (I think). That's how your thumb is able to blot out the moon.

The difference of distances between "Prayer Woman" and Frazier is very small compared to the distance from the camera (roughly a city block). Therefore, their relative actual image sizes are less affected by "forced perspective" than, say, the "cookout" photo (if that is the Civil Air Patrol photo) where the camera is roughly 20 feet or so away, and the difference in distance from the camera between Oswald and Ferrie is, therefore, far more significant in their resulting image sizes.