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Views: 0 Author: Site Editor Publish Time: 2026-09-07 Origin: Site
Compare two different short throw optical platforms by projection distance, room depth, zoom, lens shift and installation flexibility. The best throw ratio depends on your screen width and available projector position—not brightness alone.
Designed for applications where available projector-to-screen distance is limited.
Requires more projection depth but adds zoom and lens shift for professional positioning.
Throw ratio describes the relationship between projector lens-to-screen distance and the width of the projected image. A smaller throw ratio produces the same image width from a shorter distance.
For every 1 meter of image width, the approximate lens-to-screen distance is 0.44 meter.
For every 1 meter of image width, the approximate lens distance begins around 0.68 meter.
The zoom range allows a longer projector position while maintaining the required image width.
The difference becomes much more obvious as image width increases. The table below shows approximate lens-to-screen distances for common professional image widths.
| Image Width | 0.44:1 Distance | 0.68:1 Distance | 0.82:1 Distance |
|---|---|---|---|
| 2.5 m | 1.10 m | 1.70 m | 2.05 m |
| 3.0 m | 1.32 m | 2.04 m | 2.46 m |
| 4.0 m | 1.76 m | 2.72 m | 3.28 m |
| 5.0 m | 2.20 m | 3.40 m | 4.10 m |
| 6.0 m | 2.64 m | 4.08 m | 4.92 m |
A 0.44:1 projector is especially useful when screen size is large but available lens-to-screen distance is limited. Its main advantage is compact projection geometry.
Produce a wide image while keeping the projector closer to the screen.
Useful where ceiling structures, simulator frames or walls limit mounting distance.
Helpful where users or equipment are located between projector and screen.
Golf simulators, classrooms, meeting rooms, immersive rooms, museums and interactive displays.
A 0.68–0.82:1 platform requires more projection depth, but the adjustable zoom range and lens shift can make installation significantly easier in professional AV systems.
Provides a useful distance range instead of a single fixed optical position.
Allows optical image positioning with less dependence on digital correction.
Useful when projectors must align with existing ceiling structures or multi-channel layouts.
Well suited to immersive, simulation, dome and professional installation environments.
No. Brightness and throw ratio are different specifications. Brightness affects image output, while throw ratio determines optical distance and image width.
Lower brightness than 7500U, but can create the same image width from a much shorter distance.
Higher brightness, but requires greater distance for the same image width.
Throw ratio is only one part of installation design. Zoom and lens shift can be more important when projector mounting positions cannot be placed exactly on the ideal optical axis.
Moves the image optically while preserving the basic rectangular image geometry.
Digitally adjusts image shape when projection angles or surfaces create distortion.
Choose the model according to available installation distance, resolution, brightness and optical positioning requirements.
| Model | Brightness | Resolution | Throw Ratio | Zoom | Lens Shift | Best Fit |
|---|---|---|---|---|---|---|
| MX-ST4800U | 4800 lm | WUXGA | 0.44:1 | Fixed | No | Compact professional rooms |
| MX-SL6000W | 6000 lm | WXGA | 0.44:1 | Fixed | No | Bright cost-effective short throw installations |
| MX-SL6000U | 6000 lm | WUXGA | 0.44:1 | Fixed | No | Golf, immersive, simulation and compact professional AV |
| MX-SL7000U | 7000 lm | WUXGA | 0.68–0.82:1 | 1.21× | Yes | Professional flexible installations |
| MX-SL7500U | 7500 lm | WUXGA | 0.68–0.82:1 | 1.21× | Yes | Higher-brightness professional AV systems |
Choose 0.44:1 when installation depth is limited. Consider 0.68–0.82 when the room is deeper and lens shift improves placement.
0.44:1 works well for compact rooms; 0.68–0.82 offers more optical flexibility for professional multi-projector layouts.
Selection depends on channel width, projector mounting positions and multi-projector alignment requirements.
Calculate actual image width and available lens distance first, then select the optical platform.
Not automatically. A 0.44:1 projector is better when shorter installation distance is the priority, while 0.68–0.82:1 may be better when zoom and lens shift provide greater installation flexibility.
Approximately 1.76 meters from the lens to the image surface.
No. Projection distance is determined mainly by throw ratio and image width, not lumen output.
They serve different functions. Lens shift changes image position optically, while keystone and geometry correction digitally adjust image shape.
Start with your required image width and the maximum available lens-to-screen distance. Divide available distance by image width to estimate the throw ratio your project needs.
Instead of choosing a projector by brightness first, enter your screen width and available projection distance to determine which optical platform fits the room.
Calculate throw ratio, projection distance, image width, screen height and diagonal size before finalizing projector placement.
Open Throw Ratio Calculator →Available private-label options include product logo customization, startup logo setting, user manual customization, carton packaging customization and black or white housing color options.
Explore OEM & ODM Services →Send your image width, available projection distance, room dimensions and installation position. SMX can help compare 0.44:1 and 0.68–0.82:1 short throw projector platforms for your project.
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