The biggest thing I see these days are new photographers who have no idea how to use f-stops. In fact; so many of them don’t have a clue about exposure. They seem to think that you underexpose your images and then fix it later in photo manipulation software.
Well here is how to know what F-Stop to use to get the proper exposures.Photography deals with capturing light in a way that appeals to your artistic sensibilities, whether you prefer perfectly-lit, tack-sharp portraits worthy of presidential candidates or blurrier, artistic renderings of NASCAR competitors roaring by at 180 mph (290 kph). To consistently create the kinds of pictures that will make your creative spirit soar, you need a firm grasp of common camera settings such as shutter speed, ISO setting and f-stop (or focal stop).
F-stops in particular have a tremendous effect on image characteristics, some of which may not be obvious to amateur shooters. For the bulk of this article, we’ll discuss and improve your grasp of the mysterious f-stop.
You can use your camera’s manual (M) or aperture priority (Av, or aperture value) mode to take full control of your camera’s aperture. In addition to controlling how much light enters the camera, changing the size of the aperture also changes image depth.
As you tweak your camera’s aperture, you’re altering the lens’ depth of field. Depth of field is another photography concept that’s easy to cloud with complicated mathematics and esoteric language, but, basically, it refers to how much of a scene is in focus.
Shallow depth of field is a powerful tool for making great pictures by drawing attention to specific aspects of a picture. For example, if you compose a portrait in which the subject’s eyes are the only facial feature in focus, you’re isolating the eyes and making them stand out in an arresting way that your viewers can’t miss.
The reverse is true if you want deep depth of field. Many landscape photographers use high f-stops in the range of f/16 or f/22, which helps keep objects in both the foreground and background in focus.
The fastest way to understand how to make f-stops work for you is to experiment. Pick one subject and shoot it using different f-stop settings.Review the images to see how sharpness and brightness change from image to image. Regardless of the kinds of subjects you choose to photograph, understanding f-stops, aperture and depth of field can help you make a mundane scene totally marvelous.