1. Supporting structure for a film projector

1. Person who operates the film projector

2. Amount of light that reaches the film

3. Plastic material used as a base for film

4. Opening through which film passes in the projector

5. Handle used to manually rewind the film

6. Adjustment ring on the lens for focusing

7. Transparent material used to modify the image

8. Width-to-height ratio of the projected image

9. Ability to change the size of the projected image

10. Audio component of a film

11. Circular device on which film is wound

12. Optical component that focuses the light onto the screen

13. Adjustment of lens to sharpen the image

14. Transparent image used in some projectors

15. Individual picture on a strip of film