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Grace
Schaub was photographing at an antique auto show when
she decided to put a 17mm lens on her Minolta X-700 camera.
For this unique point of view she photographed at about
a foot from the front wheel and tilted the camera to encompass
the entire car. This created severe distortion of the
wheel. The effect was enhanced by using an aperture of
f/22 to ensure sharpness throughout the picture plane.
© 2003, Grace Schaub, All Rights Reserved
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We judge near and far, big
and small by our innate sense of perspective. A sort of visual grammar,
it orders the world around and ensures that we can get where we're
going and that when we reach out to touch we'll have a tactile rather
than virtual experience. In photography, and all visual arts, the relationship
of foreground and background is established by the relative size of subjects
within the picture's two-dimensional plane.
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Photojournalist
Barry Staver made this image while working on a British
Airways in-flight magazine assignment about raising buffalo.
This image was made with a Nikon F5 and a 20-35mm f/2.8
Nikkor lens on Kodak 100 SW film. Staver used the widest
setting on the zoom (20mm) and got close to the wrangler.
This created a dynamic composition where the cowboy seems
to pop out of the frame while retaining the context of
the working atmosphere of the ranch.
© 2003, Barry Staver, All Rights Reserved
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Much of what determines our
sense of a scene's perspective is the lens we use to create the
image. So-called "normal" lenses, such as a 50mm in 35mm format
and an 80mm in medium format, are called just that because they order
perspective in a way that is close to what we see. But when we use very
wide angle or long telephoto lenses, combined with a particular point
of view, we can skew that normal sense of perspective and create another
way of looking at a subject or scenes. For some, such as architectural
photographers, that can result in unwanted distortion. This can be corrected
with camera movements or special lenses, known as PC (or Perspective Control)
lenses. But one person's distortion is another's creative
point of view, and that's where creative use of long and short lenses
comes into play.
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Long
lenses not only get you close to distant subjects; they
also can help you "assemble" disparate elements
of a scene into closely packed elements. Taken from about
30 ft away with a Tamron 28-200mm lens set at 200mm and
an aperture of f/16 (to maximize depth of field) on a
Canon EOS 1N, this street scene becomes a collection of
very different subjects unified by the frame.
© 2003, George Schaub, All Rights Reserved
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A Sense Of Space
When used to their full potential very wide angle lenses (24mm and wider)
tend to expand space by altering the apparent distance between foreground
and background subjects. Conversely, long-range telephoto lenses (200mm
and longer) tend to compress those distances and create what is known
as a "stacking" effect.
But use of the lens alone does not guarantee the full visual effect. To
enhance the expansion of space with wide angle lenses, exploit their close
focusing distance capability and get close to the foreground subject,
being sure to allow for the context, or background, to show. An added
visual kick is when the lenses are used at narrow apertures to obtain
a deep zone of sharpness, or depth of field. Placement of the foreground
subject at the edge of the frame and tilting the lens to the side, up,
or down further adds to the effect.
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When
we use a long lens to isolate a set of subjects within
a distant landscape we choose both a composition and a
distinct point of view unique to the "photographic"
eye. This scene, photographed by Frances Schultz, uses
a painterly effect known as aerial perspective. The darker
near foreground is separated from the distant background
by the interplay of light and dark tonal values. So even
though the telephoto lens "stacks" the foreground
and background, aerial perspective provides a sense of
scale.
© 2003, Frances E. Schultz, All Rights Reserved
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To compress space, make use
of the narrower angle of view of long telephoto lenses to stack subjects
together. The effect is a flattening of the image plane and is an excellent
way to enhance repeating patterns, group similar subjects, or play with
the juxtaposition of one environment with another. Telephoto lenses can
also be used to create abstractions from larger subjects, such as buildings
or long-distance landscape views. They can also be used to isolate distant
subjects so that other visual effects, such as aerial perspective, can
be brought into play. This relies on light values rather than just size
relationships to yield a sense of scale.
In truth, neither super wide angle nor telephoto lenses change the relationship
of subjects in the scene. You can see this by cropping a 20mm image to
a 50mm angle of view and comparing the perspective with one found in an
image made with a 50mm lens. Yet the visual trick of forced, flattened,
or expanded perspective works because of our need to create order and
our tendency to fall for optical illusions. We see an image as not just
a single subject but as a message that conveys both a subject and its
context. It's the way we gather information about the world, and
it's how we allow an image to represent more than just a color or
monochrome screen on a piece of paper.
Give it a try. Break some rules and play with perspective. The reward
might just be some rather extraordinary scenes.
--The Editors
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