Hello i need to know how to reduce the size of the light cone at the trip let ??? at the moment alot of light is spilling around the triplet. focus is good. brightness could be better . I know i read it on this forum some where but i need to know which lense etc i need to move??


Regards Swift

Hi swiftden,
are you using the old or new style fresnels? you can try moving the bulb/ reflector and collector fresnel to reduce the cone. Looking over your project gallery did you figure out your keystoning?

Lamp position plays a role in the size of the cone at the triplet. Make sure your lamp is at the best position by adjusting the lamp and watching the lightcone. You can only do this for a couple of minutes while the lamp is warming up.

you can ajust the spillage by moving fresnel len's up or down, or back and forward, thr this and you see the spillage move, (while on)

cheers.