Stay Focused (free with in-app purchases) is an interesting app that does a very complex function for photographers called Focus Stacking. You take a series of photos, from 2 to 100, with different ...

Focus stacking is a technique that will give your macro shots much sharper focus. Here's how to get started with a dSLR. Lexy Savvides Former Editor at Large Lexy was a producer and on-air presenter ...