Our first scene is outdoors with our subject placed against a very distant background. We didn't talk about the importance of the distance of the background in our musings on the previous page, but ...

The iPhone 7 Plus has a new feature, rolled out via a software update Monday. It's called portrait mode, and gives users the option of artificially adding bokeh to the background of their shots.

We started with the theory and our refresher in the physics of it all, illuminating our lack of depth in that field, so to speak. In addition to the 'trivial' focal length and f-stop number, there ...