“Find a location with good light for a portrait shot. Place your subject some distance in front of a simple background and select a wide aperture together with a moderately long focal length such as 100mm on a 35mm full-frame camera (about 65mm on a cropped-frame camera). Take a viewpoint about one and a half metres from your subject, allowing you to compose a headshot comfortably within the frame. Focus on the eyes and take the shot.”
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For this, I’ve used an archive shot, as practicing this technique is something I frequently do with my portraits. (Also, I was having a hard time finding a willing volunteer!)
Shot at 100mm with an f/2.8 aperture on a full-frame camera, the shallow depth of field beautifully separates the subject from the background, making them stand out.