DSLR camera: a digital camera that combines the optics and mechanisms or a single lens reflex camera with a digital imaging sensor
Mode settings: You change the mode settings with the mode dial, every DSLR camera has a "program", "shutter priority", "aperature priority" and "manual" setting on the mode dial. Each mode setting does a different task.
WHAT IS APERATURE?// Aperature is the space through which light passes in an optical or photographic instrument, espically the variable opening by which light enters a camera; depth of field.
Aperature is measured by F-stops. F stops are the dimensionless number that is quantitative measure of lens speed. It determines how much light is let into the lens.
DEPTH OF FIELD: the distance between the nearest and the furthest objects that give an image the chance to be in focus. It impacts the images by determining how in or out of focus the background and foreground are.
CONCLUSION: aperture impacts photos asthetically by altering the clarity due to the amount of light allowed to pass through the f stops.