A strong photograph tells a clear story. Our job, as visual artists, is to force our audience to see exactly what we want them to see in our artwork. Focus, and blur, are some of the most effective tools that we photographers can employ to lock our viewer’s attention onto one particular element within our frame.
Your viewer’s eyes are inherently more interested in the parts of your image that are sharp than in the areas that are blurry. Unfortunately, the camera lens inside of my smartphone is manufactured with a fixed aperture setting. Unlike the lenses that we use on our dslr cameras, there is no way for me to reduce the size of the depth of field that my cellphone camera captures while I am out shooting.
Thus, the Lens Blur Filter in Snapseed from Google is an essential tool for mobile photographers like you and me. With this tool, we can create realistic blur effects in our images and really drive our viewer’s eyes around our photo. There is even a secret feature hidden inside of this filter for those who stick around to the end of this tutorial.