Stewart Filmscreen Corp 4-Way ScreenWall ElectriMask To the Owner, Vertical Masking System

TO THE OWNER

Congratulations on your purchase of the finest optical viewing screen available anywhere in the world!

Please take a moment to review this manual—it will help ensure you many years of trouble-free service from your new Stewart Filmscreen product.

About your 4-Way ScreenWall ElectriMask

Your 4-Way ScreenWall ElectriMask is a fixed frame with both vertical and horizontal masking panels, enabling the viewer to obtain any aspect ratio. The term aspect ratio refers to the format (width to height) in which your video sources are produced. The masking panels are controlled by three separate motors, allowing maximum control and adjustability.

Figure 1: Masking systems

Vertical Masking System

	HDTV Image Size		1.33:1 Standard
16:9/1.78:1		Converts to	Video NTSC
			Format

Horizontal Masking System

	HDTV Image Size	Converts to	1.85:1 Widescreen
16:9/1.78:1			Format

Horizontal and Vertical Masking Systems

HDTV Image Size	Converts to	2.35:1 Cinemascope
16:9/1.78:1		Format

The sizes and weights of the various 4-Way ScreenWall ElectriMask models are listed in the charts in Figure 2.

2 Stewart Filmscreen Corporation