…thanks to Nancy Merrill for hosting the Photo a Week Challenge
Nancy describes depth of field like this:
Depth of field in photography (and light in general) is how narrow a strip of what you are looking at is in focus. In photography, the depth of field is controlled by two things: your f-stop (aperture) and the length of your lens (mm). To narrow your depth of field using aperture, use a smaller f-stop number. This will open your shutter wider and let more light in.
So if you want to shoot something up-close and personal with great bokeh (blurring) in the background, use a smaller f-stop and a longer lens.
Most of my photography is hit and miss, especially with my Panasonic Lumix camera. When I use the iPhone I’ve figured out how to get bokeh or blurring when I want it. The first two shots were with my Panasonic.