Introduction I recently stumbled upon an interesting DIY article[1] where the author used a very simple trick to enable a regular mobile phone to take macro-focus photographs. This looked like fun, so I tried to replicate the experiment and take some shots of my own. The idea is simple. A water droplet is placed on top of the phone’s camera to act as a magnification lens. In macro photography, the ratio of the subject size on the sensor plane to the actual subject size is at least 1:1[3]. N...
