Male Banded Demoiselle (Canon 40D with Sigma 150mm lens, f6.3, 1/200 sec, ISO 400) :
(3) Don't be afraid to use flash
Some photographers prefer to use only natural light for macro work on the basis that the use of flash can make the image look artificial.
Although this can be true if too much flash is used or it isn't diffused well, flash does have a number of benefits. Firstly, it allows a smaller
aperture to be used and hence provides greater depth of field (and perhaps additionally allows the use of a faster shutter speed); secondly
it picks out detail and hence can provide sharper-looking images; thirdly, given some insects' preference for lurking in the undergrowth, it provides
photographic opportunities which simply wouldn't have existed if flash were not being used; finally, if lighting an image entirely by flash, the very short duration
of the flash acts in the same way as a very fast shutter speed and can remove motion blur.
Given the proximity of the flashgun to the insect it is necessary to diffuse the flash to prevent the light from being too harsh.
I use a Sto-fen Omni Bounce or a home-made diffuser made out of kitchen towel. If using the in-built flash, a tissue held on with a rubber band will act as an effective diffuser.
The examples below were lit entirely with flash.
A Common Wasp Eating a Windfall Pear (Canon 450D with MPE-65 lens, f13, 1/160 sec, ISO 100):
Tawny Mining Bee Feeding on Redcurrant (Canon 30D with MPE-65 lens, f16, 1/160, ISO 100):
(4) In-Flight Shots
In-flight images of insects are perhaps the most difficult macro subject matter to capture. Certain insects make the task slightly easier
by hovering from time-to-time. Hoverflies would be perhaps the most common insect to oblige in this manner, but still make very tricky subjects.
I have had the most success using manual focus and trying to creep up on insects which are hovering around flowers. Occasionally, just occasionally, you will get one
to hover long enough to get them in focus through your viewfinder and to squeeze the shutter button. For large insects such as dragonflies, it is possible to take in-flight shots
with a telephoto lens rather than a macro lens. Migrant Hawkers are one dragonfly which hovers from time-to-time and hence offers more in-flight
photographic opportunities than many other species of dragonfly. Again, a mixture of skill and patience is required to track such a fast moving, erratic insect through the viewfinder. This makes it all the more satisfying when you
do manage to get a half decent in-flight shot.
Migrant Hawker (Canon 30D with Canon 400mm lens, f8, 1/400 sec, ISO 400):
(5) Capture interesting behaviour or action
Images are often more interesting if they contain some natural behaviour or action rather rather than merely a static insect. Here are a few examples.
Here a Black Ant is 'herding' aphids in order to milk them for their honeydew (Canon 450D with MPE-65 macro lens, f10, 1/160 sec, ISO 100):
Secondly, this Dung Fly is about to devour a smaller fly that it has caught (Canon 30D with MPE-65 lens, f14, 1/160 sec, ISO 100):
Thirdly, a newly emerged Southern Hawker dragonfly next to its exuvia (Canon 400D with Sigma 150mm lens, f11, 1/200 sec, ISO 200):
(6) Try extreme macro
If your equipment allows, why not try extreme close-ups of a part of an insect, rather than trying to fit the whole insect into the frame?
Obviously the greater the level of magnification the shallower the depth of field, so some care is needed to ensure that the chosen part of the insect is in focus.
Here are some examples;
A Jumping Spider (Canon 30D and MPE-65 lens, f8, 1/160, ISO 100):
This tiny Globular Springtail is around 2mm in length (Canon 40D with MPE-65 lens, f9, 1/160, ISO 100)
A Hoverfly cleaning itself after feeding (Canon 450D with MPE-65 lens, f13, 1/160, ISO 100):