Distorting Reality

When I first started studying photography, I learned about the effects that various focal lengths had on a scene. Wide angle lenses give prominence to closer subjects while shrinking distant features into tiny objects. On the other hand, telephoto lenses compress a scene, making subjects that are far apart appear next to each other, and fooling the eye with scale. It wasn’t until I started experimenting with many different focal lengths that I really understood what this meant. Here are two examples from opposite ends of the focal length spectrum.

Mt. St. Helens from the lahar or ash flow that destroyed the Toutle River Valley in the eruption of 1980, Mt. St. Helens National Monument
Mt. St. Helens from the lahar or ash flow that destroyed the Toutle River Valley in the eruption of 1980, Mt. St. Helens National Monument

The image above was captured at the 35mm film equivalent of a 16mm focal length. Here, the foreground rocks and flowers are rendered quite large, while the massive volcano of Mt. St. Helen’s is shrunken into the background. The wide angle emphasizes the distance between the foreground and the horizon, seeming to stretch them apart.

A view of a Palo Alto home includes the city of San Mateo in the midground and San Francisco in the background.  The view is compressed using a long telephoto lens.
A view of a Palo Alto home includes the city of Redwood Shores in the midground and San Francisco in the background. The view is compressed using a long telephoto lens.

The photo above shows the opposite effect. It was captured at the 35mm film equivalent of a whopping 1280mm. I took the photo in Palo Alto, CA, about a quarter of a mile from the house in the foreground. The buildings of Redwood Shores (Oracle headquarters) appear as if they are directly behind the house, when in fact they are 15 miles away. At the top of the photo can be seen the buildings of downtown San Francisco, which is 40 miles from the house. The extreme telephoto squashes this distance between subjects so that they appear stacked on top of each other. This same effect has been seen in countless photos of the moon rising from behind buildings or a giant sun rising over an African landscape.

City By The Bay (Photo of the week)

Note: Click image below to view a larger size.

San Francisco floats above a low fog bank over the bay.

This week’s photo is a slight departure from the usual natural history themed shot. This panorama of San Francisco was taken from the Marin Headlands with a 400mm telephoto lens. Shots were taken vertically and stitched together, creating an image in excess of 70 megapixels. A low fog had settled over the bay, hiding the water and giving the city the look of floating, as it so often has.

This image worked well as a black and white, as the tonality of the fog below the city and the sky above matched well, balancing the top and bottom of the image. The high contrast of the buildings partnered with the natural feathering provided by the fog is reminiscent of a pencil sketch.

Copyright 2017 Hank Christensen