1906 And Today, The Earthquake Blend By Shawn Clover

But where was the exact spot the photographer stood? What was the equivalent focal length of his camera’s lens combined with the film medium? How high off the ground was the camera? Where was the sun in the sky? Everything needs to be precise when layering two photos on top of each other. Shawn's original idea was to tear away a piece of the modern photo to expose the 1906 photo, but after playing around a bit, everything seemed more interesting when the two were softly blended together.
He found that many of the original photos he planned to use were in fact unusable because the photographer was situated in a place where a building stands today. Others now have trees blocking the view.