D.o.F. Video Questions: 1) How does a photographer achieve a blurry background in a portrait? 2) How does a photographer achieve a landscape photo in sharp focus from near to far? 3) Where should a photographer focus the lens in a landscape scene to be sure to take advantage of the full depth of field?
Watch our Video for Blurry backgrounds:
Blurry Backgrounds: Aperture and DEPTH of FIELD
Copy the Notes below: Know the following vocabulary before you watch the video below, then answer the 3 questions at the bottom of this page:
Depth of Field is the distance between the closest and farthest objects in a photo that appears acceptably sharp.... your camera can only focus sharply at one point. ... in a photograph with a narrow/shallow DoF, only a small slice of the image is in focus.
Conversely, with a large/deep DoF, much more of the scene is sharp.
Other Vocabulary to know for this Video: Aperture Priority abbreviated A ("A Mode") or Av (for aperture value) on a camera mode dial, is a setting on some cameras that allows the user to set a specific aperture value (f-number) while the camera selects a shutter speed to match it that will result in proper exposure based on the lighting conditions as measured by the light meter
Aperture: an aperture is a hole or an opening through which light travels
Exposure; In photography, exposure is the amount of light which reaches your camera sensor or film.
F-Stop; is the number that you see on your camera or lens as you adjust the size of your aperture. Since f-stops are fractions, an aperture of f/2 is much larger than an aperture of f/16. Just like the pupil in your eye, a large aperture lets in a lot of light.