Exposure With Aperture
Aperture (General Basic Explanation)
As we all know to photograph a subject, what ever it may be, is to paint with light. The amount of light that hits our Sensor which is where our pictures come from, depends on the Aperture. Our Aperture is considered an AMOUNT value for exposure. This AMOUNT is measured in Stops of Light. These measurements are measured as shown here as in FULL STOPS of Light: f/2.0, f/2.8, f/4.0, f/5.6, f/8.0, f/11, f/16, f/22, on upward. We use our Dial on the camera we adjust the amount of out Aperture by 1/3 (one third) stops +/- o obtain the proper amount of light to hit our sensor to give us the proper Exposure as shown here f/2.8, f/3.2, f/3.5, f/4.0, f/4.5, f/5.0, f/5.6, f/6.3, f/7.1, f/8.0, f/9.0, f/10, f/11, f/13, f/14, f/16, f/18, f/20, f/22.
One other thing we should realize that our Aperture gives us the our DEPTH-OF-FIELD in an Exposure. The wider open your Aperture Blades are on the lens, the More Blurrier our background will be, the more Narrower the blades the more in focus the whole image.
The Lower the F-stop Number such as f/2.8, f/1.8, f/1.4 the faster the glass and the better quality of glass. Along with those qualities of Glass comes the expense of the glass. This is not to say that the beginners camera an lenses that come in a kit are bad lenses, they are just inexpensive lenses.
The image was made by Daniel Peters