Ever see a photograph with a dreamy, out-of-focus background? Or perhaps a landscape with pin-sharp details from the closest foreground elements all the way to distant clouds? Aperture is what allows ...

Lens aperture is increasingly up there with megapixels when it comes to the camera specifications that smartphone makers like to boast about, but what exactly do those numbers mean? Here we look at ...

If you want to get creative with your photography, and out of that all-too-tempting automatic mode, you'll need to get your head around a few key settings. We've already looked at ISO, and now it's ...

The aperture is made up of mechanical blades that increases or decreases in size depending on the aperture you select. In humans, the iris is a thin, circular structure in the eye, responsible for ...

While in anything other than full auto mode you can control all a camera's settings, but only Manual mode lets you adjust aperture and shutter speed independently. For more information about other ...

Primed goes in-depth on the technobabble you hear on Engadget every day — we dig deep into each topic's history and how it benefits our lives. You can follow the series here. Looking to suggest a ...

As you might expect, you use Aperture-priority mode when you need to control the size of the opening through which light travels to reach the sensor -- usually to affect the depth of field -- but ...