9 Tips For Taking Great Digital Photos
Introduction
Modern cameras are highly automatic in operation. They have auto
focus and auto exposure. The camera will focus on the subject -
often identified by a small circle or square at the centre of
the viewfinder - and calculate an appropriate exposure by
detecting the level of reflected light - usually from the same
spot. A slight pressure on the shutter release will activate
those two functions, without taking a picture. Further pressure
on the shutter release will result in a photo being taken.
1 Take care to Focus and Expose on the Subject of the Image
Imagine you are taking a picture of your girl friend against the
background of an interesting harbour. Your girl friend is six
feet away while the harbour is around 50 feet away. You position
your girl friend carefully - she is important to you - at one
side of the picture with an interesting view of the harbour in
the distance. Now do you want to focus on the harbour - or your
girl friend? Position the square or circle at the centre of the
viewfinder over the spot that you want to focus on and correctly
expose - take a slight pressure on the shutter release - and
keep that pressure while you move the camera to frame the image
you want to take - then, and only then, push the shutter release
fully down and take the photo. If you want to have everything in
focus - then see 7 Depth of Field.
2 Carefully Compose Your Shot
Before taking the picture take a careful last look through the
viewfinder. Check the composition, and particularly that heads
and feet are included, and that all faces are visible in
anything other the smallest of groups. With the camera taking
care of focus and exposure - you have the time to concentrate on
getting the composition perfect. Photographic amputation of
limbs is unforgivable!
3 Set the Colour Balance Correctly on the Camera
Digital cameras have controls that allow the operator to set the
nature of the lighting illuminating the subject. In general they
will default to daylight, since shots are likely to be taken
outdoors. On this setting, pictures taken indoors under
artificial tungsten lighting will look yellow - they will have a
yellow cast. Pictures taken under strip lighting will look
green. Setting the camera appropriately will produce consistent
balanced photographs. Look in the camera manual to see how to
set the control - it is very easy. Flash guns produce a light,
which is very similar in colour 'temperature' to that of
daylight.
4 Don't Expect Too Much from the On Camera Flash
The on camera flash is designed for convenience when shooting a
small group of people. It will not illuminate a hall. When
watching public events on the television it is somewhat
surprising to see members of the audience in the Albert hall
take a pocket camera out and shoot a picture with their flash.
This is unlikely to be successful. Better to turn the
sensitivity of the camera up - say to 800ASA - the 'film speed',
or sensitivity. This might produce a better result. Do not
confuse sensitivity of the camera with shutter speed. They are
different. An on camera flash will illuminate only a short
distance - as a guide pick up your cat firmly with two hands by
the tail and swing it around at arms length - that is the sort
of distance the flash will illuminate!
5 A Tripod is Essential for Long Distance Shots
Most modern digital cameras come with a zoom lens that can take
both wide angle and telephoto shots. This is extremely useful.
However remember that when the camera is on its furthest
telephoto setting, camera shake will become a problem. If you
are taking a telephoto shot and the camera chooses a slow to
medium shutter speed, the result might be blurred due to the
movement of your hands while taking the exposure. Use a tripod -
all wildlife photographers use them. They are a pain to carry
but improve quality by orders of magnitude.
6 Fast Moving Subject Require a Fast Shutter Speed
The shutter is that part of the camera which opens briefly to
allow light to strike the sensitive surface of the detector to
produce an image. Fast moving object require extremely short
shutter speeds in order to capture a crisp sharp image. Slower
shutter speeds will produce a blur as the object moves. In
general outdoor photography a shutter speed of 1/60th or 1/125th
second will be acceptable. In contrast, shooting a formula one
car in motion will require shutter speed of say 1/1000th of a
second.
7 A little About Depth of Field
In days past, a photographer would measure the level of light at
a location with a light meter and then calculate the best
combination of shutter speed and aperture to correctly expose
the film. This is now done automatically by the camera. Aperture
is the measure of how much light is passing through the lens.
The lens has an iris, which can be 'stopped down' to reduce the
amount of light passing through the lens. A fully open lens will
pass the greatest amount of light - full aperture - but this
also reduces the 'depth of field'. The depth of field is the
band of distance over which the subject is in focus. In 1 above,
with full aperture either your girl friend or the harbour is in
focus - but not both. By 'stopping down' the lens - reducing the
aperture - both can be brought into focus. But as a consequence
the amount of light passing through the lens is reduced. The
length of time which the shutter is open will have to be
increased to compensate.
8 When taking Landscapes Avoid Putting the Horizon Across the
Centre of the Image
Drawing the picture horizon in the middle of the image simply
looks naff. It divides the picture in to two and fails to engage
the viewer. Best to concentrate on the sky or the foreground.
Photograph a setting sun with red sky, or a rainbow with the
horizon low in the picture. Or concentrate on the landscape and
place the horizon high in the picture.
9 Be Aware of the Effects of Back Lighting
Let us go back to the example given in Hint 1. Imagine that in
the picture of your girl friend in front of the harbour, the sun
is setting, casting its golden rays across the sea and
reflecting on the masts and other metal objects of the harbour
with white clouds illuminated red in the dying rays of the sun.
An evocative and romantic shot. Taking the shot with the camera
will result in a beautiful background but a black shadow of a
girl friend! Now that might be appropriate should you have had a
particularly bad day with her and it might correctly reflect the
mood. However using the on camera flash to fill in the darkness
- to illuminate her face and show her features might be more
appropriate on a better day!