Market guide
The room chooses the lens
Put image width, throw, shift, mount and screen on one drawingProjector shopping begins with geometry. A lens must create the intended image from an available location while clearing heads, lights, doors and ventilation. Digital keystone is not a substitute for a correct optical installation.
Image
Choose width and aspect routine
A 120-inch diagonal means different widths in 16:9 and scope formats. Seating, subtitles, gaming interfaces and room height all affect the useful size.
- Draw
- Use image width, height and lower edge rather than diagonal alone.
- Content
- List how often each aspect ratio is watched.
Lens
Stay inside the throw and shift envelope
Zoom and lens shift interact. A projector near one extreme may not retain the full published range of the other, and installers need clearance around the chassis.
- Verify
- Use the exact manufacturer's calculator or installation manual.
- Reserve
- Leave focus, cable and filter access after mounting.
Screen
The surface is part of the optical system
Gain, texture, viewing cone, acoustical transparency and UST compatibility can help one room and harm another. A premium projector cannot correct a moving or unsuitable surface.
- Sample
- View screen material at the intended distance.
- UST
- Use a rigid, flat UST-compatible surface and exact furniture geometry.
Evidence used
First-party sources behind this guide
- 01Current home-theater projector databaseProjectorCentral · checked August 15, 2026Open source
- 02Current D-ILA home-theater projectorsJVC · checked August 15, 2026Open source
- 03Current home-theater projectorsEpson · checked August 15, 2026Open source