Vectors
Vectors are one of the most important screen forces. They tell us where to focus attention and where important action is happening.
Understanding how vectors work helps filmmakers plan shots and decide on the placement of cameras, lights, people and other on screen elements.
The three types of vectors are
- motion vectors (MV), strongest. Motion vectors are created by objects moving in the field, someone walking by, cars driving, anything that moves.
- graphic vectors (GV), weakest. Graphic vectors are created by stationary elements—for instance horizon lines in the background, placement of furniture, etc.
- index vectors (IV), widest weak-strong range. Index vectors work like pointers and include actual pointing, arrows or directional signs, and the direction toward which people in a shot are looking.
"Z" Axis
The "Z-axis" for vectors is the direction of the camera (hence the viewers' eye)—coming towards or moving away from the objects in a visual field.
Two important aspects of vectors are
magnitude—the relative strength of the vector
direction—converging, diverging, or continuing
Vectors have a significant impact on getting viewers to see what you want them to see.
Figure/Ground
We make decisions about what's going on in a scene partly based on the figure/ground relationship. Some elements we identify as foreground, others background. The key differences include:
- The elements in the foreground we perceive as things capable of acton, subject to movement, or as an important point of focus.
- Figures are perceived as in front of the ground—figures are in the foreground
We generally tend to pay attention to one or the other—figure or ground—and usually to figures.
Direction, orientation, and asymmetry | Magnetism of the frame and attraction of mass | Vectors