FOCAL LENGTH / DEPTH OF FIELD / FOCUS
Focal length is represented in mm. It is a calculation between the focal point - where the light rays converge to form a sharp image - and the digital sensor / film
The focal length tells you how much of the view will be captured; the bigger the focal length, the narrower the view and higher the magnification - how much the camera is zoomed in.
You can adjust focal length by twisting the lens of the camera.
Depth of field
Definition: the distance between the nearest and the furthest objects giving a focused image.
There are two types of depth; shallow and deep. Shallow focuses on a closer object / subject while the background image is out of focus creating a blurred effect. Deep depth of field focuses on the whole frame so everything in the photograph is in focus.
Aperture is used for depth of field. A smaller aperture [f22] focuses on the whole frame and a bigger aperture [f2.4] focuses on a particular object in the frame and blurring out the rest.
Focus and focus points
Focus allows the camera to take a picture in detail. A sharp focus will produce a photograph with sharp detail in the whole frame or a point in the frame. A soft focus produces the opposite effect.
The point of focus can be changed by aiming the camera at what you would like to focus or changing the settings. The point of focus can be changed by pressing the AF button where 9 dots are displayed on the display screen. Choosing different points changes what the camera focuses on.
Depth of field Definition: the distance between the nearest and the furthest objects giving a focused image. There are two types of depth; shallow and deep. Shallow focuses on a closer object / subject while the background image is out of focus creating a blurred effect. Deep depth of field focuses on the whole frame so everything in the photograph is in focus. Aperture is used for depth of field. A smaller aperture [f22] focuses on the whole frame and a bigger aperture [f2.4] focuses on a particular object in the frame and blurring out the rest. Focus and focus points Focus allows the camera to take a picture in detail. A sharp focus will produce a photograph with sharp detail in the whole frame or a point in the frame. A soft focus produces the opposite effect. The point of focus can be changed by aiming the camera at what you would like to focus or changing the settings. The point of focus can be changed by pressing the AF button where 9 dots are displayed on the display screen. Choosing different points changes what the camera focuses on.