Two terms that are common in photography are aperture and f-stop, but what do they mean and how does knowing about aperture ...

But there's one thing that really gets my goat: that f/1.7 aperture. What gives with these unnatural fractions of an f-stop? I know where I am with an f/1.8 lens, just as I know the score with an ...

Each full-stop change represents a 100% increase or decrease in light gathering; that is to say, an aperture that's open to f/1.4 gathers twice the light as one set at f/2.0. There are a couple of ...

The standard formula for controlling depth of field is to control the f-stop of the lens. And that is true enough. A wide-open aperture results in a shallow range of focus, and a small aperture ...

The RF 16-28mm F2.8 IS STM is Canon's newly launched ultra-wide full-frame lens offering powerful creativity, a fast f/2.8 ...

Images, and the devices that capture them, are my focus. I've covered cameras at PCMag for the past 13 years, which has given me a front row seat for the DSLR to mirrorless transition, the ...