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As you click your way through this website you may be impressed
with the natural beauty of fungi. They exhibit a great variety
in colour and form. When the weather is right, the woods and
meadows of Nova Scotia teem with attractive mushrooms and
other fungi. If you could only capture these images forever,
they would give lasting pleasure. Photography is the way to
do it and, for many, photographing mushrooms is a lot more
fun than eating them and much less risky.
Until recently mushroom photography was generally accomplished
using a single lens reflex (SLR) camera and preferably a macro
lens. The macro lens itself could often cost as much as the
camera. Also, exposures can be a little tricky in the dappled
shade of the woods and you could spend a lot of money on film
and processing before you were happy with the results. So,
not only was this a pricey hobby but the results were sometimes
disappointing.
But we are now into the 21st century and the age of the digicams.
Once you recover from the initial high tech shock, digicams
are dandy little technological marvels. Prices are dropping
rapidly and you can now buy a pretty good digicam for the
price of the SLR used routinely in the past. More than this,
digicams almost always have macro capability built in and
can photograph objects as close as a few centimetres from
the lens. Although serious photographers might continue to
use the classical SLRs with special macro lenses for maximum
quality, for most of us the results from digicams (if we do
it right!) are great. And remember, you never have to buy
film for the rest of your life!
There is one very important caveat, however, i.e. although
modern digicams can be substituted for the SLR, the
basic rules of photography still apply. So here are
a few things we must pay close attention to.
1. There isn't much light in the woods.
Exposures
of a second or longer are not unusual and hand held shots
are out of the question. A tripod is absolutely essential
to steady the camera or you will get blurry pictures (note
the difference between fuzzy and blurry. Fuzzy applies to
that part of the picture that is not in sharp focus. Blurry
is the word used to describe the entire picture due to shake
or movement). You need a tripod that is close to the ground
so you can get a squirrel's eye view of a mushroom. There
are a host of mini tripods coming on the market to accommodate
the demand initiated by the macro capability of digicams.
Pick any one you like, but the sturdier the better.
If
you are seriously into macrophotography of fungi, mosses,
flowers, insects etc. there are standard sized tripods available
where the centre post unscrews and the legs "break" so you
can lower the head to ground level. These are great and
highly recommended, especially for use on uneven terrain.
A bean bag is a good alternative for a low angle of view
but don't overuse it!
2.
Reflectors.
In mushrooms, large caps often shade the stalk which then
appears unnaturally dark. A couple of reflectors to lighten
up the shadow areas helps. Reflectors are made from 8" X
10" pieces of cardboard (e.g. old mounting board) covered
with aluminum foil. You just prop up the reflectors against
an aluminum tent peg stuck in the ground and adjust the
angle to reflect enough light to lighten up shadows. Reflectors
can also be used to add a bit of highlight to a flat image.
You can do the same thing with fill flash but this is a
lot trickier and not for rank beginners. In fact, if you
are into fill flash already you probably don't need to be
reading this stuff. The built in flash in the camera is
too strong for close ups and will 'white out ' the scene
with over exposure.
3.
Stopping down the lens.
There
is a diaphragm on your camera lens that opens and closes.
When fully open the lens it is said to be wide open or at
maximum aperture. This is designated by a number called
the f-stop. A digicam might have a maximum aperture of f
2.8. When you close the diaphragm to a smaller aperture
you are said to be stopping down the lens. In older cameras
these 'stops' are engraved on the lens and are 2.8, 4, 5.6,
8, 11, 16, 22. You don't have to worry about these numbers
except to know that every number in this series lets in
half the amount of light as the number below it and twice
as much light as the number above it. You don't even need
to worry about stopping down the lens in digicams as on
the automatic setting the camera does everything
for you without any instructions from you and thank goodness
for that! It picks the best combination of aperture and
shutter speed to give you the correct exposure. Too easy!
However, it is important to remember the following points.
A.
The smaller the aperture the greater the depth of field.
B.
The closer the camera is to the subject the narrower the
depth of field.
What
on earth does this mean?
When
you are taking a picture close to the subject and with the
lens wide open (at full aperture) then the depth of field
is very shallow and you might find that only the front mushroom
of a clump is sharp and the rest is fuzzy. You compensate
for this and increase the depth of field by stopping down
the lens. You want all the depth of field you can get, so
you use the smallest aperture to get maximum depth of focus.
So! How do you stop down the lens?
Calamity!
Calamity! Woe is me! YOU'RE GOING TO HAVE TO READ
THE MANUAL! Here is where you get tech shock. Digicam
manuals are written by people who don't need them, for people
who can't use them. It's even hard to use the index.
You
must set your digicam for aperture priority. That means
you have to go from automatic setting to manual
setting on your digicam. You do this by going to your camera
manual and then follow the instructions in the book that
allow you to pre-select the aperture (= aperture
priority). Digicams don't usually go past an f 10 aperture.
If that's what you have then that's what you take. Pre-select
the f10 aperture and the camera (on the tripod) will automatically
give you the correct exposure and also automatically focus
on the subject. What more could you ask?
At
f 10 in the woods, the exposure will be quite long, and
that is why you need a tripod. Also, after pressing the
shutter release (careful there!) give the camera a few seconds
to store the image before you touch it or move it. Of course
in some digicams you can change the effective light sensitivity
('film speed') from ISO 100 to 200 or 400 or even higher.
These film ratings are linear so with twice the ISO number
you have twice the sensitivity to light so the exposure
can be halved. But you don't get something for nothing and
the penalty might be a loss in image quality.
At
last! Now to take the picture.
Once
you find a nice group of fungi set up your equipment. Move
around! Check different angles and heights for the best
composition. A common error is to have too much background
and the subject mushroom is too small. So, try to fill the
frame. Also, remember to use reflectors to add some light
to the shadow areas or brighten the scene. If you have a
willing companion (or very long arms) you can reflect a
little sunlight from many feet away.
So,
if everything goes right what can you expect from your digicam?
Curious?
Why not view a selection of
shots of mushrooms taken with a digicam.
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