Projection guide
Standard, short, and ultra-short throw
Ask GLMedia about rental options for event projection. We review availability, configuration, and alternatives for your event.
Planning criteria
With the date, location, and intended use, we can review which equipment and combination can be offered. You can inquire before measurements, drawings, or the final schedule are ready.
Throw relates projection distance to image width. Standard, short, and ultra-short categories guide research; confirm the choice using the exact lens and model table.
We can compare positions from a sketch. Show screen, people, and equipment even before final measurements are available.
System decisions
- Space
- Review the optical path and circulation. A shorter lens changes possible placement but does not automatically remove shadows or obstacles.
- Adjustments
- Identify available zoom, focus, offset, and lens shift. Digital correction does not replace optical range or allow every physical position.
- Surface and support
- Check flatness, compatible surface, and exact-system mounting. For ultra-short throw, review geometry at the planned position carefully.
What to share
Share image width, available distance, and screen height. A side photo helps identify obstructions.
If a projector is available, send its model and lens code. We can separate available adjustments from unidentified accessories.
Preparing the comparison
- Find the official model and lens table or calculator for the correct aspect ratio.
- Check the distance measurement reference point. Do not automatically measure from the chassis edge.
- Check optical range, offset, and allowed adjustments; test focus and geometry before fixing placement.
- Test with people in their actual positions. Review shadows, circulation, and visibility without entering the projection beam.
Three technical questions
Does every ultra-short-throw lens have zoom and lens shift?
Do not infer adjustments from the category. For example, the documented G62 UST lens is fixed, without zoom, and has specific support and movement restrictions.
Check features before choosing a position that depends on them.
Does short throw prevent every shadow?
It depends on lens, screen, and people positions. Draw and test the actual path; a commercial category does not prove that nobody will interrupt the light.
Can keystone compensate for an incorrect distance?
Check distance and optics first. Geometric correction does not create a new lens range and may reduce usable area. Check focus and readability after adjustments.
Checks to guide decisions
| Symptom | Check | What it helps distinguish |
|---|---|---|
| Image too large | Distance and lens range. | Optical placement. |
| Distorted corners | Orientation, surface, and geometry. | Alignment. |
| Adjustment unavailable | Model, lens, and supported feature. | Actual capability. |
Installation and limits
Use exact mount and projector instructions for attachment, loads, and safety distances, rather than forum recipes.
Do not force movement or calibration on a lens with documented restrictions. Identify the assembly first.
Sources and context
Official model-specific documentation. Check variant, accessories, and conditions before applying settings or calculations.