Close Up Photography
Introduction
Close-Up Lenses
Close-Focusing Lenses
Lens-Extension Devices
Depth of Field in Close-Ups
Lighting for Close-ups Outdoors
Lighting for Close-Ups Indoors
Introduction
Most 35mm cameras will focus on subjects as close as 1½ to 2
feet without any special equipment. Although this is close enough for many
subjects, you can find a whole new world of fascinating and unusual picture
opportunities at closer distances. With close-up equipment, you can take
compelling photographs of flowers, small animals, insects, coins, stamps,
and scale models and more. You can make tabletop pictures and copies of
pictures or documents. The world of close-up photography can keep your
imagination occupied for some time.
Close-Up Lenses
You can get into the close-up league with any camera that accepts filters
simply by using close-up lenses.
These are positive supplementary lenses that let you take sharp pictures
at distances closer than those at which your lens would normally focus.
Close-up lenses fit over your camera lens like a filter. They're available
in different powers such as +1, +2, and +4. Each close-up lens is good
for a limited range of close-up distances. The higher the number, the stronger
the close-up lens and the closer you can get to your subject. The instructions
that come with the lenses tell you what your subject distances should be
at various focus settings and what area you'll be photographing at those
distances.
You can use two close-up lenses together to get even closer to your
subject. For example, a +2 lens and a +4 lens equals a +6 lens. Always
use the stronger close-up lens next to the camera lens. Never use more
than two close-up lenses together since this may affect the sharpness of
your picture.
Close-up lenses are made in various powers. The higher the number, the
greater the magnification of the subject. These lenses are light, compact,
and relatively inexpensive. The image quality they produce is acceptable
but not as good as that of camera lenses specially designed for optimum
close focusing. Therefore, you'll get better sharpness if you use lens
openings of f/8 and smaller when you use close-up lenses. You'll also obtain
better depth of field using a small lens opening.
One benefit you have when you use close-up lenses is that no exposure
compensation is necessary. Just expose as you would if you were photographing
the same subject without a close-up lens.
Close-Focusing Lenses
Some lenses, called macro or micro lenses, are designed for close-up
photography. They let you focus at distances as close as 4 or 5 inches
from the subject and obtain life-size images on your film without using
a supplementary close-up lens. Macro lenses typically come in focal lengths
of 55mm and 100mm. The longer focal length allows you to focus on small
subjects from farther away you don't have to get right on top of your subject,
where you might block existing light or frighten it if it's an animal.
Macro lenses are convenient because you can use them for close-ups one
moment and for distant subjects the next without special attachments.
Most manufacturers of auto-focusing SLR cameras also make at least one
auto-focusing macro lens. Some compact auto-focus cameras have a close-up
switch that allows you to work at a closer distance than the normal close-focusing
distance. Auto-focus cameras are an ideal tool for close-up work because
they let you choose your point of focus very precisely. Simply center the
area that you want in sharp focus in the viewfinder and then use your focus
lock to hold that focus. If you work in the single-shot autofocus mode,
you'll always be guaranteed a sharp image, since in this mode most auto-focus
cameras won't allow you to trip the shutter unless the image is sharp.
A zoom lens that includes a telephoto range usually has a macro setting
that allows you to take close-ups as well. With most of these zooms, the
macro range functions at the telephoto end of the zoom, which means you
can be fairly far away from your subject and still get a close-up image.
However, at its closest focus, the macro setting of a zoom lens will yield
an image smaller and less sharp than a true macro lens.
Because of the added lens extension required for close-up focusing,
macro lenses may require an exposure increase depth of field is very limited
in close-up photography. Even with a small aperture such as f/16, depth
of field will seldom exceed a few inches and for extreme close-ups may
be less than an inch. By positioning the camera so its back is parallel
to the subject you can align the plane of focus to the subject plane, thereby
making the whole subject sharp at close subject distances. If you use a
macro lens on a camera with a through the lens (TTL) meter, the meter will
make the exposure compensation automatically. But if you are using a separate
handheld meter or working with a manual flash unit, you will have to make
the exposure compensation yourself. See the methods described under "Lens-Extension
Devices" and "Lighting for Close-ups Outdoors."
Lens-Extension Devices
Another common method of taking close-up pictures involves extension
tubes or a bellows. Such a device fits between the lens and the camera
body to let you make sharp pictures at close distances. Since an extension
device fits between the lens and the camera body, you can use it only on
a camera that accepts interchangeable lenses, which includes most SLR cameras.
Since the tubes or a bellows moves the lens farther from the film than
it would be for normal picture-taking, you must compensate for the light
loss by using a larger lens opening or a slower shutter speed. Cameras
with built-in meters do this automatically. The longer the extension, the
greater the exposure increase.
Depth of Field
in Close-Ups
No matter what method you use to make your close-up pictures, you'll
find that depth of field is very shallow. Since small lens openings increase
depth of field, it's a good idea to use the smallest lens opening that
the lighting conditions will allow. For optical as well as depth-of-field
considerations, it's wise not to use lens openings larger than f/8 with
+ 1, + 2, and + 4 close-up lenses, or larger than f/11 with more powerful
lenses.
Programmed-exposure cameras that have depth-of-field modes are useful
in close-up work since they will automatically give preference to small
apertures. Similarly, auto-exposure cameras with an aperture-priority mode
allow you to pick a small aperture to increase depth of field in close-ups.
Lighting
for Close-ups Outdoors
For most of your outdoor close-ups you'll probably use the natural lighting
on the subject. If part of your subject is in sunlight and part in shadow,
you can use a reflector, such as crumpled aluminum foil or white cardboard,
to reflect the sunlight into the shadow areas.
Backlighting and sidelighting can be quite effective for making close-ups
of subjects like flowers and foliage. These types of lighting bring out
the texture and emphasize the translucency and delicate qualities of such
subjects.
Many advanced photographers like to use flash for their outdoor close-ups.
Flash close to the subject allows you to use small lens openings to get
the depth of field you need for close-ups. When using flash, it's a good
idea to use the fastest sync speed available on your camera. Using a combination
of a fast shutter speed and small lens opening with flash lets the background
go very dark because there is so little exposure from the daylight. You
can use this technique to tone down a distracting background or to make
a bright, colorful subject stand out against a dark background. Shooting
at fast shutter speeds also minimizes subject movement, such as the swaying
of flowers on a windy day.
When you make extreme close-ups with flash, it simplifies exposure calculation
if you can use your flash off the camera, always at the same distance from
the subject. Then regardless of your subject distance, your basic flash
exposure with a specific film and flash combination will always be the
same. Keep in mind, however, that a dark subject, such as a black woolly
caterpillar, requires more exposure than a light subject, like a white
moth.
If you can't use an extension flash to move the flash farther away from
the subject, don't use regular guide numbers to calculate exposure for
close-ups. The inverse-square law, on which guide numbers are based, doesn't
work when you use flash at extreme close-up distances. You can use the
Lens Openings for Close-ups Table as a guide in determining exposure. Or
you may want to run your own exposure tests to determine the best exposure
setting for your film and flash combination at various subject distances.
Make exposures at half-stop increments from f/8 to f/22. Use one layer
of white handkerchief over the flash to diffuse the light and to reduce
its intensity. Keep a record of your exposures so that you can determine
which lens opening produced the best exposure. Use that lens opening for
any close-up pictures taken from the same subject distance.
If you're using an automatic electronic flash for close-up pictures,
you may be able to let it determine the exposure automatically, or you
may have to set it on manual, depending on the flash-to-subject distance.
See your flash instruction manual. To use the flash unit on automatic,
it may help to cover the flash reflector with one layer of handkerchief,
but make sure that the handkerchief does not cover the light-sensitive
cell in the flash unit. Take some trial pictures to see if your automatic
electronic flash will produce good exposure for close-ups. If the trial
pictures are too light-overexposed - use a smaller lens opening; if they
are too dark-underexposed - use a larger lens opening.
Another way to use automatic flash effectively, even at very close distances,
is to bounce the flash onto a white card held above the subject. This diffuses
the light to create softer illumination. Some flash manufacturers sell
bounce-card brackets for this purpose. Exposure will remain automatic provided
the flash sensor is pointing at the subject.
Dedicated flash/camera combinations that measure the light through the
lens or off the film plane are the ideal source for close-up flash. Dedicated
flash will provide accurate exposure regardless of what type of close-up
device you are using, and regardless of whether you are using the flash
on or off camera.
Lighting
for Close-Ups Indoors
While your outdoor close-up pictures might be of moving subjects, such
as butterflies or buttercups swaying in the breeze, chances are that indoors
you'll be photographing objects like coins, model cars, and still-life
setups. Since you don't need to be concerned with stopping action with
this type of subject, short exposure times and bright flash aren't necessary.
Consequently, you can use photolamps including spotlights to see the effect
of the lights on your subject before you take the picture. These lamps
are sold by photo dealers.
If you're using color slide film balanced for 3200 K tungsten illumination
3200 K tungsten lamps.
With daylight-type films, you can use either 3400K photolamps or 3200K
tungsten lamps when you use 80B and 80A filters
respectively. When you want to take black-and-white pictures, you can use
either light source with no filter.
When you want to emphasize the contours and shape of a subject, you
can photograph the subject against a relatively dark background and rimlight
it by placing lights slightly behind the subject. When you do this, make
sure the camera lens is shielded from the direct light of the lamps. You
can emphasize surface textures by skimming the light across the surface
of the subject.
When you make a reflected-light exposure meter reading of a small subject,
the meter reading will be influenced by a bright or a dark background.
For this reason, it's a good idea to make reflected-light readings from
a grey card. Or you can use an incident-light exposure meter to make a
reading from the subject position.
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