Although most insects do not have orifices in their body for picking up sound vibrations, many use parts of their body, such as their wings, antennae, or special hairs, like TV antennae to detect vibrations in the environment or in the air. Any errant movement on your part could cause you to miss a shot, so be sure to tread carefully when approaching your subjects.
Your job is to make yourself appear non-threatening. The first thing you want to do is move very slowly. Look before you move, look at where you place your feet, look at where your equipment is, and most of all plan where you are going to put the front of your lens. Many potentially good shots have been ruined by the front of a lens bumping a branch or leaf where an insect was resting, causing it to flee.
Understanding the insect’s visionInsects such as the housefly, the hornet, the butterfly, and the beetle, have what we call compound eyes. These eyes are made up of many separate units called ommatidia. Each ommatidium samples a small part of the visual field. Having multiple ommatidia allows the animal to easily detect motion. Some, like the dragonfly, have as many as thirty thousand units per eye, each with its own lens. With a compound eye, the insect sees a mosaic image. This looks something like the highly magnified dots of a newspaper photograph. Because the lenses in the insect’s eyes have a fixed focus and can’t be adjusted for distance, insects see shapes very poorly.
As an object moves across the visual field, ommatidia are progressively turned on and off. Because of the resulting “flicker effect,” insects respond far better to moving objects than stationary ones. Honeybees, for example, will visit wind-blown flowers more readily than still ones. Houseflies and dragonflies have eyes that cover most of their head. This gives them almost 360 degree vision, enabling them to see predators coming from any direction. Most insects can see some color. While our eyes see a full spectrum of wavelengths from red to violet, many insects see a limited range of colors. The colors they detect are the ones most useful for finding food and shelter.
Move very slowly!
It is known that insects, especially flying insects, will try to escape from a predator by a simple escape reflex based on the direction and the velocity of a moving shadow or object. If a critical velocity is exceeded, the insect will try to fly away from the direction of the threat. Slow moving objects or shadows often do not trigger this reflex. The lesson learned is that the best way to approach an insect is to move slowly and gently. Most of all, avoid casting your shadow on the insect.
There’s still one more part of this series on insect micro photography, where Huub discusses how to compose your shots and ensure a sharp focus. Make sure you don’t miss it by signing up for our free weekly newsletter.
About the Author: Huub de Waard is a Dutch wildlife photographer who specializes in insect macro photography. He photographs very small invertebrates so close-up that they are transformed into large subjects. Through his images, he aims to highlight the different characteristics of a variety of species—and their individual charm. His specialty is called microphotography, which is the extreme form of macrophotography, dedicated to the photography of small objects from life-size to modest enlargements of up to about 20. He does not apply focus stacking and all of his pictures are single images made in his own garden. His work can be found at http://www.huubdewaardmacros.com/