The exposure triangle is a common way of associating the three variables that determine the exposure of a photograph, these are: aperture, shutter speed, and ISO. A person must balance all three of these to achieve a desired result as they have a significant impact on how your photos will look and feel. Aperture, affects the depth of field, or how much of an image appears sharp. Shutter speed also affects image sharpness, with slower shutter speeds leading to blurred images and faster shutter speeds resulting in sharper images. The choice of ISO enables you to use the optimum combination of aperture and shutter speed when the amount of light would normally prevent you from doing so. However, increasing the ISO also reduces the quality of your images.
The rule of thirds is applied by aligning a subject with the guide lines and their intersection points, placing the horizon on the top or bottom line, or allowing linear features in the image to flow from section to section. The rule of thirds is used to create a visually pleasing image which is easier for the human eye to view and understand. The rule of thirds is the basic method used to help the compositions of photos.
Using The Rule Of Thirds
The rule of thirds was written by John Thomas Smith,this was written back in 1797 in order to find the perfect way in how to capture rural scenery.
The rule of thirds is applied by aligning a subject with the guide lines and their intersection points, placing the horizon on the top or bottom line, or allowing linear features in the image to flow from section to another. It can be used by using a visual of tow lines formatted at each angle on the screen or possibly within dots for slight dissidence as to where to place the main subject of the image.
This image clearly has followed the rule of thirds. The horizon sits equally along the bottom horizontal line and the main subject of the cyclist is near enough on the top right cross point as well as being set on the vertical right hand side line. Furthermore, this photo has a large depth of field and in the background we can see a mountain peak is subjected to the bottom left cross section when following the rule of thirds.
