Focus and Depth of Field
Bokeh
Blur or Quality of Blur (appears differently with different lenses)
Diopter
a small dial or knob adjuster connected to the viewfinder.
Depth of Field
The zone in your photo that has acceptable sharpness or focus. aperture(larger aperture = shallow DoF and a smaller aperture = deeper DoF), distance from subject (a closer subject to the camera, the shallower depth of field), and focal length (a more telephoto lens = shallower depth of field) all affect depth of field. #'shallow'
Viewfinder Focus
hat the photographer looks through to compose, and, in many cases, to focus the picture.
Shooting Fast Objects Tips
#auto f-stop & auto ISO (shutter at 1/500) freeze subject frame #blurry background but frozen subject, shutter priority (F1/16, 1/60, ISO 200)
Auto Focus Mode tips
#half-pressing the shutter release button will start the autofocus process. #in most cameras, you can choose to use the point in the center of the frame to pick focus. #in many cameras, you can choose to focus on each side or a specific point #modern cameras have face detection to determine focus
Focus Tips
#recommend using autofocus in most situations nowadays. #set-up shots are better for manual when you have time. #in low light situations you might need to use manual focus. #get a sharp focus on a persons' eyes when shooting people. #increase your f-stop to make it easier to get in focus (good for landscapes)
Shallow Depth of Field
'shallow' depth of field has s small zone in focus
Deep Depth of Field
A 'deep' depth of field has a large zone in focus
Auto Focus Modes
Camera programatically focuses on certain points in a frame.
Continuous or servo mode
The camera constantly adjust to try to focus on the subject
One shot mode (AI-S mode)
The camera locks focus upon the half-shutter press, and stays focused to that distance.
Focus
The position at which rays of light from a lens converge to form a clear and sharply defined image on a focal plane.