| Hint | Answer |
|---|
| Measure of the sensitivity of film (or sensor) to light. | |
| Term for out of focus highlights in an image, often utilized in portraits and macro photography. | |
| Opening in lens through which light passes. | |
| Ratio of diameter of #3 to focal length. | |
| Canon lens mount system, introduced in 1987 | |
| Lens with an enlarged image circle that can be adjusted to alter the plane of best focus. | |
| Softening of an image which occurs when a lens is almost completely stopped down, e.g. at f/32 or f/45 | |
| Type of lens having a fixed focal length, for example, Canon 85mm f/1.8 | |
| Type of camera that allows the photographer to 'look through the lens' using a mirror box and pentaprism viewfinder. | |
| Studio lighting method involving a main light illuminating the side of the subject's face farthest from the camera. | |
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