In the world of photography "Macro" means photographing smaller subjects using dedicated "macro lenses" constructed to better capture the details and complicated structures from a short distance.
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Photographing small insects and similar often means you will have to slow down your movements not to scare the subjects and you also need to have a very steady hand and good balance. Watching someone trying to photograph a small insect in the wild might look a bit odd. A bit like Yoga perhaps.
Getting that sharp image of a flys eyes means you need serious precision and "auto focus" wont do it for you. You need to focus manually.
If you miss focus by 0,5mm you might have missed your subject completely ending up with a very blurry abstract image. Might be nice but probably not what you wanted.
This means that you will have to take many shots of a subject to at least have a good chance of getting one good image. Getting focus were you want is one difficult part of macro photography but then there is light, shadows, depth of field, drama and composition not to mention trying to hide from the subjects your tracking not to scare them away.
There are many different techniques, lenses, flashes and gadgets to get the result and each have their own set of tools to get the shot.
Some catch insects and cool them in a fridge to slow them down. The insects behave like as if winter is coming when temperatures drop meaning they will go dormant.
The photographer can then gently place them on a preset scene rigged with flashes, diffusers and what not. They will have a few minutes to get a good sharp and controlled image. Nothing I have ever really tried since I prefer photographing them awake in the wild.
Many use tripods to get a steady shot of a sleeping bug in the early morning. They might even shot several frames from the exact same position using a tripod. Each frame with a slightly different focus. Perhaps the first frame is shot with focus on the frontmost tip of the subject and then move backwards towards its tail in steps of say 0.05mm.
After they have anything between 3 to 150 frames they will use a computer program to merge the different frames into one image with superb sharpness and depth of field.This is called stacking.
Also not something I practice but I have tried it and the results can be truly astonishing.
Getting close and intimate with your subjects is difficult but rewarding.
This ant was curious about the photographer or perhaps the lens which would look like a giant round mirror. Great little moment to catch him.