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HOW DO THEY DO THAT?
By STEVE PRICE
(This
is the first in an on-going series of tips and techniques
that will follow at 3 to 4 week intervals covering different
aspects of wildlife photography and photography equipment,
including shooting digitally).
GETTING
SHARPER PHOTOS
Wildlife
photographers use a variety of methods and personal
styles to produce outstanding images, but no matter
what the photos depict, nearly all the pictures that
really stop us in our tracks and make us look twice
have at least one common characteristic.
They’re absolutely tack-sharp in focus and show
outstanding details.
In a grizzly bear photo, for example, you’ll see
individual hairs in the fur, while a photograph of a
drake mallard will highlight separate green, gray, and
white feathers. Practically any photographer can achieve
this type of result occasionally, but the real pros
do it consistently; here’s how you can, too.
The very first step is using excellent lenses. This
is the bad news, because the best lenses, especially
when it comes to “big glass”
like a 300, 400, and 500mm telephoto, are extremely
expensive. They’re expensive because of the way
they’re constructed. The best of these actually
consist of groups of coated lens elements inside that
big barrel, not just a single piece of glass. My 300mm
f/2.8 Nikkor has 11 lens elements in eight separate
groups, for example, and a 500mm f/4 Nikkor has 11 elements
put together in 9 groups. Less expensive lenses simply
do not have such complex construction, which is why
they don’t cost as much.
This is the mechanical end of the equation. The top
photographers who have their work published regularly
all use these types of lenses. Other less expensive
lenses will produce acceptably sharp photos –
even photos you can get published – but they won’t
record the minute details of that grizzly’s fur
or separate the feathers of that mallard.
Buy the very best lenses you can afford, and plan to
move up the ladder as you can afford to. As you’re
doing this, here are some other ways to help make your
photos sharper:
If you’re still shooting film, and many pros are,
choose a fine grain film. In my work as a contract photographer
for ESPN/Outdoors when we were still shooting film,
we generally used Fujichrome Provia 100F, which has
extremely fine grain, which in turn equates into sharpness.
In Africa I also shot a lot of Fuji Velvia 50 and I
have since used the newer Velvia 100, both of which
also have very fine grain.
As
you notice, these are relatively slow films, so you
need to stabilize your camera and lens when you’re
shooting them, especially when you’re using a
telephoto, because you won’t always be able to
use a fast shutter speed. I simply can’t tell
you how critical this is in achieving sharpness. A lot
of wildlife photography is done from automobiles where
tripods aren’t workable, so I use a homemade beanbag
I drape over the window, or on the hood if I can actually
get out of the vehicle.
My beanbag isn’t always filled with beans, either.
To make it, I cut the pants leg off a worn-out pair
of jeans, sewed one end closed, and sewed Velcro strips
on the other end. This way I can fill it with beans,
rice, even dirt and use it for a few days, then empty
it (or give the beans back to the camp chef, as I did
in Kenya), and it packs flat in my camera bag.
I’ll write more about tripods and tripod heads
in another column, but there’s another ingredient
to photo sharpness you should always study, which is
light. We talk about the “soft” light of
early morning and late afternoon; one of the reasons
photographers prefer to shoot in this light is because
of the absence of harsh shadows. Dark shadows take away
detail and thus make your photograph appear less sharp.
Thus, whenever you can, avoid shooting subjects in harsh
shadows, and especially dark subjects like an elk in
the Yellowstone timber or a moose in the Maine woods.
Remember, the camera sees what you see, but does not
always record what you see the way you see it.
By the
same token, you’ll lose fine detail when you shoot
at mid-day. The bright light washes out color, which
in turn takes away your detail.
Another technique photographers use regularly is to
focus on the eye or eyes of their subjects. An animal
or a bird’s eye is often what draws our attention
in a picture, and if it’s in sharp focus and shows
clearly, we can easily overlook the fact the rest of
the picture might not be quite as sharp. By contrast,
however, we all immediately notice if a subject’s
eye is not in sharp focus, and the photo loses its impact.
Use a fast shutter speed. This will help “freeze”
a moving subject, particularly if you can shoot at 1/1000th
of a second or higher.
A shutter speed this fast will also help erase possible
camera movement. Unfortunately, the faster the shutter
speed, the wider the aperture you’ll be using,
so you’re going to lose some depth-of-field and
your chances of blurriness increase.
Depth-of-field can help you achieve subject sharpness,
since basically it means part of the area in front of
your subject and also behind it will also be in focus.
To add a little more depth-of-field, close down one
additional f/stop, say from f/4 to f/5.6, or from f/2.8
to f/4. Depending on which lens you’re using,
this will increase the area that’s in focus. You
can even “bracket” your focus this way,
just like you bracket for exposure, by shooting 4 or
5 frames at different f/stops.
Now, what do you do if you’re in a low-light situation
and have to shoot at, say, 1/15th of a second, or even
slower? If your subject is not moving, shoot a burst
of four or five frames without moving your camera. Normally,
one of these, usually shot 3 or 4, will be noticeably
sharper than the others.
If you’re shooting digitally, all of these techniques
still apply, but you have several major options for
adding sharpness in the Photoshop and Photoshop Elements
image management programs. The basic tool, under Filters,
is named Unsharp Mask, but there are other tricks that
can and are often used. Certainly, you want to shoot
large files initially, either the largest JPEG you can,
or even in RAW, so you have more to work with in the
computer.
My philosophy is to get the picture as close to right
when I shoot it, to minimize the computer work. Of course,
when I’m shooting transparencies, I have to get
it right initially, unless I want to spend the time
scanning an image into the computer and then attacking
it with Photoshop.
To me, all that time with a computer is time away from
actual photo work in the field, which we all know is
a lot more fun!
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