Focus

1. Focus How the lens reflects and refracts light This is usually at the point where the light originates

2. Depth of Field • Is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image. • Depth of field is the front-to-back range of focus in an image — that is, how much of it appears sharp and clear.

3. Deep Focus • cinematographic technique using a large depth of field. • Depth of field is the front-to-back range of focus in an image — that is, how much of it appears sharp and clear.

4. Shallow Focus • A technique incorporating a small depth of field. • Depth of field is the front-to-back range of focus in an image — that is, how much of it appears sharp and clear. • In shallow focus one plane of the image is in focus while the rest is out of focus. • Shallow focus is typically used to emphasize one part of the image over another.

5. RACKING focus • Shifting the attention of the audience of a film or video by changing the focus of the lens from a subject in the foreground to a subject in the background, or vice versa.

6. Zoom • a method of decreasing (narrowing) the apparent angle of view of a digital photographic or video image. • Digital zoom is accomplished by cropping an image down to a centered area with the same aspect ratio as the original.

7. Forced perspective • to make an object appear farther away, closer, larger or smaller than it actually is. • It manipulates human visual perception through the use of scaled objects and the correlation between them and the vantage point of the spectator or camera.