The latest black and white photography exhibition about Macao is not a run-of-the-mill affair. Close inspection of the works reveals subtle aspects to the images.

The portion of the spectrum of light actually visible to the human naked eye is very small. The infrared photography featured in this exhibition allows visitors to explore some of that normally-unseen part of the spectrum.

Use of infrared technology for image making renders water and sky grey in colour. Green trees appear as white, as if it were snowing in Macao.

Leaves on trees acquire a new and mind-boggling appearance via the technology of infrared photography.

Some digital camera CMOS sensors are extremely light sensitive. They can capture light of various wavelengths in the portion of the spectrum that is normally invisible to humans.

For this image a specific filter – that can let infrared light pass through to the camera – is employed. It blocks a large portion of the light normally visible in the spectrum.

In a reversal of the process, images and colours look significantly different once infrared light is actually blocked out.

A ferry painted red appears white in this infrared photograph.

Tree leaves and blue sky get a dramatic makeover via infrared photography.

Infrared photography refreshes our understanding of colour, exposing many normally-unseen parts of the spectrum to our human gaze.