Natural History award winner how?

[davholla]

A Tale of Two Wasps | Wildlife Photographer of the Year | Natural History Museum

Frank chose a wasp burrow out of direct sunshine so as not to let too much light into his camera. He then set up an infrared beam, which, when broken by a wasp, triggered a very fast shutter system. In this perfectly balanced composition, Frank captured not one, but two, of the small subjects –...

www.nhm.ac.uk

Frank chose a wasp burrow out of direct sunshine so as not to let too much light into his camera. He then set up an infrared beam, which, when broken by a wasp, triggered a very fast shutter system. In this perfectly balanced composition, Frank captured not one, but two, of the small subjects – the wasp on the right measuring only six millimetres.

These two wasps have very different approaches to laying their eggs. The cuckoo wasp (right) lays its eggs in the burrows of solitary digger wasps. When its young hatch, they feed on their host’s egg or larva and then the food store. The redbanded sand wasp (left) lays eggs in its own burrow, supplying a caterpillar for each of its young to eat.

Although this website

says

Canon EOS 5D Mark II + 100mm f2.8 lens + close-up 250D lens + reverse-mounted lens; 5 sec at f13; ISO 160; customized high-speed shutter system; six wireless flashes + Fresnel lenses; Yongnuo wireless flash trigger; Keyence infrared sensor + Meder Reed relay + amplifier; Novoflex MagicBalance + home-made tripod.

This image of two wasps—a cuckoo wasp and a sand wasp—entering their neighboring nests in a sandy part of Normandy, France, was created on more than just a stroke of luck. Photographer Frank Deschandol built a high-speed shutter out of an old hard drive because his camera’s own shutter would have been too slow to capture the moment. The resulting composition, balanced with the larger sand wasp framing the vibrantly-colored cuckoo wasp in the center, could not have been captured without both luck and innovation

Check out the breathtaking winners of the 2020 Wildlife Photographer of the Year contest

This year's winners of the London Natural History Museum's Wildlife Photographer of the Year competition went above and beyond to capture beautiful scenes from all across the natural world.

www.popsci.com

So if I understand correctly he made his camera into a camera trap for flying insects. Does anyone know how to do this? I.e something that is triggered.
I would love if others could easily do this and we start seeing lots of these.