To get this photo, I waited until late fall after the leaves were gone. I parked at the Holiday Inn which was closed for the season and walked across Route 3 to the metal guard rail along the section of road that crosses Duck Brook. Once in the ravine, I located a spot at the edge of the water that I thought had the clearest view of the bridge, and even from there I could only see two of the three arches. The left and right arches each span 89', but in the photo, the left arch is completely obscured by evergreens.
I set up a tripod with a Canon 5D Mark III camera and a Canon 24mm tilt/shift lens. With the camera mounted in landscape orientation, I shifted the lens all the way down to capture the lower part of the scene and all the way up to catch the top of the bridge. Because the ravine was deep in shadow while the inner part of the center arch was in full sunlight, I had to take multiple exposures ranging from a half second to 125th second, which is seven full stops, at f/11 with ISO set to 50. Later in Lightroom and Photoshop, I stitched the lower and upper halves and manually blended the exposures. Note also that I focused on the bridge, but also took a shot focused on the large rock in the foreground and blended-in parts of that image to get more depth of field. - George Soules
Soules - George John Soules, “Duck Brook Motor Bridge,” Southwest Harbor Public Library, accessed April 26, 2024, https://swhpl.digitalarchive.us/items/show/8294.Item 12658
