Make Calculated Lens Choices part 2

Another popular choice is the 85mm (f/1.2 for Canon; f/1.4 or f/1.8 for Nikon), which is a short telephoto with exceptional sharpness. This lens gets used frequently at receptions because of its speed and ability to throw backgrounds out of focus, depending on the subject-to-camera distance. It is one of Marcus Bell’s preferred lenses for his wedding-day coverage.

The Normal Lens. One should not, however, forget about the “normal” 50mm f/1.2 or f/1.4 lens for digital photography. With a 1.4x focal length factor, for example, that lens becomes a 70mm f/1.2 or f/1.4 lens that is ideal for portraits or groups, especially in low light. And the close focusing distance of this lens makes it an extremely versatile wedding lens.

Perspective and Distortion. When selecting a lens, the perspective it provides should always be considered. Wide-angle lenses will distort the subject’s appearance, particularly if they are close to the camera or near the edge of the frame. In group portraits, the subjects in the front row will appear larger than those in the back of the group, especially if you get too close. Even “normal” lenses (50mm in 35mm format, 75–90mm in the medium formats) tend to exaggerate subject features at closer working distances. Noses appear elongated, chins jut out, and the backs of heads may
appear smaller than normal. This phenomenon is known as foreshortening. At longer working distances (such as when creating three-quarter-length portraits or group portraits), however, normal lenses are a good choice and will provide normal perspective.

For close shots of individual subjects and couples, short to medium telephotos are a good choice. You can even use a much longer lens if you have the working room. A 200mm lens, for instance, is a beautiful portrait lens for the 35mm format because it provides very shallow depth of field and throws the background completely out of focus (when used at maximum aperture), providing a backdrop that won’t distract viewers from the subject.

Keep in mind, though, that very long lenses (300mm and longer for 35mm) can sometimes distort perspective unless used at awkwardly long camera-to-subject distances. If the working distance is too short, the subject’s features appear compressed; the nose may appear pasted onto the subject’s face, and the ears may appear parallel to the eyes. These very long lenses are, however, ideal for working unobserved—you can make head and shoulders images from a long distance away.