What is Aperture?
A photograph exposure is surrounded by a pyramid – Aperture, Shutter Speed and ISO. Just how a triangle has all sides equal, every feature of the exposure holds equal rank. Aperture is the deciding factor which allows the light to enter the camera. It is a small hole that allows the light to pass through the camera. Therefore, it ultimately defines the brightness and depth of field of an image. Depth of field determines the sharpness or blurriness of an image. Aperture is measured using the F-stop function. On your camera, you will see ‘f/’ followed by a number. Doctors would relate to the term aperture more aptly because it functions exactly like the pupil of a human eye.
Use Aperture To Create Dreamy Bokeh
Shooting in Aperture Priority Mode
Amongst ample camera modes, Aperture Priority mode is selected when the photographer wants to have control over the depth of field. Having a bright background will require a smaller aperture whereas a darker backdrop will need more light to come in and thus will require a wider aperture. A high f-stop means the aperture hole is very small (less scope of light to enter the camera). A low f-stop means the aperture hole is wide enough. For e.g.: f/2.8 is a much larger aperture than f/22. It seems absurd for a beginner. Gradually, you will get the knack of it as you practice.
Often this mode is symbolized as ‘A’ or ‘AV’ in most cameras. While you select the mode, you will have all the freedom to set your aperture. The other ingredients in the exposure trio i.e. ISO and Shutter Speed will be adjusted based on the surroundings in which the camera is exposed. Usually, the photographer adopts the priority mode where the subject is to be captured in good light. When you intend to capture the entire landscape as you see it in real, then the wider aperture is the best bet – f/16 to f/22 are ideal apertures. With a wide aperture, you can keep the entire focus on the beauty of nature. Choose a narrow depth of field to pull a single figure or object that stands out from the crowd. You can focus on your subject, without having disruptions. f/8 to f/11 will help you to click sharp pictures by blurring the unwanted background.
On adopting AV mode in low light, the camera might choose a shutter speed that is too slow. Slow shutter speed means the camera should be still till it clicks the picture, otherwise there is a high possibility of the image getting blurred. The feasible option in such a situation would be to use a tripod. For people who do not own a tripod, try increasing the ISO. Doing so will compensate the lack of light which will eventually push up the shutter speed. Make sure that the higher ISO won’t affect your image by giving a noisy picture.
A camera is mere electronic device after all. Although Auto Mode is appropriate for beginners, sometimes the camera too can go wrong on certain exposure elements. It certainly doesn’t understand what a photographer is trying to capture. The right approach is to keep trying a different type of settings with the same subject. You can continue doing this till you get your desired shot.