ETTC source 4 zoom barrell for Jo-Leko setup ?

[John Wee]

Anybody use the ETC Source 4 zoom barrel (both 15-30 and 25-50) on their 800watt Jo-Leko setup ? I have hear of some saying it will melt the interior "plastic" parts of the zoom barrel assembly ? Any disadvantage of using the "zoom" lenses on the regular Leko setup at all ?

[Guillaume Cottin]

Nothing will melt, but the optical quality is inferior on the zoom lenses. You will get more chromatic aberration and a little less output. If the beam is supposed to be visible on camera (for example to simulate a sun beam) not just used as a bounce for example, it is better choose the fixed lenses. By default, I would choose the fixed lenses.