What is short throw?

Normal throw

Most projectors are normal throw projectors. They have a normal sized lens. LF1 works with normal throw projectors. Throw ratio: 0.85-1.8.

Short throw

Have big wide-angle lenses or curved mirrors. They create a really big image from inches or a few feet away from the display surface. LF1 Short Throw works with short throw projectors. Throw ratio: 0.25-0.8

What is a throw ratio?

Throw ratio is the distance of the projector from the display surface divided by the width of the display.

As an example, to create a 10 ft wide image on a wall,

* a normal throw projector with a throw ratio of 1.0 would need to be 10 ft away from the wall

* a short-throw projector with a throw ratio of 0.5 would need to be 5 ft away from the wall

* an ultra-short throw projector with a throw ratio of 0.25 would need to be 2.5 ft away from the wall

Short and ultra-short throw projectors are marketed as such. So, if you're not sure, you probably have a normal throw projector.

If you want to lookup your projector, go to Projector Central. Find your projector, then look for Throw Ratio.

Choose your LF1 lens

Works with most projectors.

Ships Apr 2019

Works with special short throw projectors.

Ships Apr 2019

Lightform comes in two different lens options

LF1 works with most projectors which are normal throw. ( Throw ratio: 0.85-1.8 ) LF1 Short Throw works with short throw projectors which have wide angle lenses that can create a much larger picture from shorter distances. ( Throw ratio: 0.25-0.8 ) If you're not sure, you probably have a normal throw projector, and need LF1.

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