Harry Guinness

Lenses aren't equally sharp at all apertures. Some are better than others. In this tutorial, I look at how to calculate the sharpest aperture for any scenario.

Visual sketching is a great method for bringing intention into your work. In this tutorial, I look at how to use your smartphone to do it.

Processing underwater images requires special considerations to compensate for the limitations of shooting underwater. In this tutorial you'll learn how to...

Snapchat is a popular messaging app. Each Snap lasts for up to ten seconds making the messages extremely temporary. This gives the service a unique appeal in...

Underwater photography is a fun but challenging area of photography. In this tutorial I look at how to get started with it and how to overcome some of the...

Computational photography is a developing field that combines the elements of traditional photography with additional computer-performed processing. It is...

TextExpander is an incredibly powerful Mac app. In this tutorial, I look at how to make it even more powerful by using scripting languages like JavaScript in...

In this tutorial I'll move beyond the basics of TextExpander and look at two advanced features: fill ins and macros. These add a dynamic element to your...

Great video is easy with modern DSLRs, but great sound is more tricky. Your camera just can't capture good audio. In this tutorial I look at how to record...

TextExpander is a productivity app that uses keyboard shortcuts to automatically insert longer blocks of frequently used text called snippets speeding up...

A smartphone is a powerful tool for any photographer, whether you’re using it to take pictures or make shoots easier. There are countless different apps that...

In this tutorial on the Mac automation app Keyboard Maestro I cover how to use variables to create powerful macros. As an example, I make a macro that tweets...