# Discussion 9

## Bullets

- Terminology
- Focal length $f$
- Field of view $fov$
- Exposure
- Shutter speed
- Aperture $A$
- F-stop $N = \frac{f}{A}$
- Circle of confusion
- Depth of field

- Field of view
- Dolly zoom
- Relate field of view to focal length $fov = 2 \arctan(\frac{h}{2f})$

- Exposure
- Time * irradiance
- F stop & shutter stop

- Thin lens approximation
- Gaussian thin lens formula

$\frac{1}{f} = \frac{1}{d_o} + \frac{1}{f_i}$

- Depth of field
- Light field
- Digital refocusing
- Resolution
- Aperture plane resolution dependent on the number of pixels under each microlens
- Microlens plane resolution dependent on the number of microlens

- Sub-aperture image

Represents an image taken with a pinhole camera at the location on the aperture plane

🖍 Board work for everything