I'm having trouble creating a Movie Projector Light in a Theater

5200north

I'm can't seem to figure out how to create the effect of the projector light bean in a movie theater scene. where  you can see the dust , i'm not getting how to make a volumetric light (i think). 

any suggestions ?

Richard Haseltine

Use one of the dispersive shader presets, if this is Iray, as a starting point. 3delight has an actual volume shader included with DS.

Cybersox

The easiest way is to use a premade Godray prop like https://www.daz3d.com/expanded-godrays-iray ; Add a bright light at the base where the projector lens would be and you're done.  

Kitsumo

There's a tutorial by Sickleyield: https://www.deviantart.com/sickleyield/journal/Tutorial-Creating-Dust-And-Atmosphere-in-Iray-522291773

nonesuch00

Kitsumo said:

There's a tutorial by Sickleyield: https://www.deviantart.com/sickleyield/journal/Tutorial-Creating-Dust-And-Atmosphere-in-Iray-522291773

I'm actually doing a render using that tutorial's methods now and I just can't seem to get the 'beams' going though the window although it does make the room look generally hazy / dusty! So that method is very picky about the geometry of the windows, the size of the room, the strength and direction of the light, and so on.

Sickleyield also make a freebie easily converted to iRay that would work better for the OP's use case. It uses a DAZ Studio primitive cone and a transmap using cutout opacity to work (much better suited to a projector's light beam).

http://www.sharecg.com/v/72345/gallery/21/DAZ-Studio/SY-Easy-Godrays-DS

 

Ivy

 

 I 3delight  there is built in or included Uber- Volumetric lighting which works great when combined with spot lights 

As for Iray personally I would use Epic Props: Godrays & Volumetric Light for Iray https://www.daz3d.com/epic-props-godrays-volumetric-light-for-iray

best option and works great in animation