Or you can go back to basics and build this reflective RGB sensor from an LED and a photocell ... shine different colored lights on an object and measure how much light it reflects.

In this section you'll find photographic features that explore holidays and photography courses, details about members meetings, trials and tribulations of installing new software along with ...

It is not magic…it’s science! How does it work? Light from an object makes its way to a sensor (see figure 1) in a camera. On the sensor there are millions of cells called photocells. Each photocell ...