Lens Calculator Choose your Projector Please select a projector...GL10C4-20GL10C4-25M20M33GL30XHP70GL80GL100 Choose your projection lens for GL10C4-20 Please select a lens...20deg-GL10 Choose your projection lens for GL10C4-25 Please select a lens...25deg-GL10 Choose your projection lens for M20 Please select a lens...22deg M20 Choose your projection lens for M33 Please select a lens...22deg M20 Choose your projection lens for GL30XHP70 Please select a lens...F56 WideF70 MediumF100 NarrowF140 Very Narrow Choose your projection lens for GL80 Please select a lens...F56 WideF70 MediumF100 NarrowF140 Very Narrow Choose your projection lens for GL100 Please select a lens...Ultra Wide 41F115 WideF140 NarrowF200 V Narrow Select the distance to the projection surface 3Metres0.5Metres20Metres Maximum diameter of the projection: Metres Illuminance: Lux For poorly lit rooms If you are human, leave this field blank. Submit