Can't get IES lights to work??

[charliepower]

I'm using 3ds Max 2015 and Vray 3.0. Just starting to look at vray IES lighting so I did a test inside a box which worked fine. However, now I'm trying to use it inside a scene it renders nothing.

 

It's an interior scene with a HDRI outside. Turned this off and now all I get is a black render. I've tried ramping the IES settings up to the absolute maximum and still nothing. What's going on?

 

Scene is modelled to scale, units set to mm, system units inches.

Vray physical cam (changing the exposure does nothing)

GI - Irradiance & Light cache

 

I'm sure I'm just missing something really obvious, any ideas?!

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Turns out I had global lighting turned off, turning it on fixed the issue.

Edited May 7, 2015 by charliepower
Fixed Issue!

[mjklm]

Have you tried importing your IES file via VRayIES light object instead of using the standard photometric light ? Please give me the screenshot of your IES light settings in max in order for me to be able to say more. Additionaly, check if your glass material has "affect alpha" set.

[charliepower]

Thanks very much for your reply, I was using the VRayIES but it turned out the problem was as simple as having the global tint switched off!

[mostafaraad]

Did you tried to switch the lighting on from vRAY global switchs from render setting ?