Vray lights not showing properly

[Anonymous]

Hi!
I’m having a trouble with the lights showing every time i try to render any scene, my camera doesn’t show the lights end results and it turns the scene into grey or very dark scene with circles showing in the final render. What might be the problem? I tried different camer settings but none is working, i also tried creating a quick scene just to try it but still not showing.

[miledrizk]

Hi,

If you're using VrayPhysicalCamera try unchecking the option called "Vignetting" to get rid of the dark

circle on the image's border.

For the lights, make sure you check the option "Invisible" to avoid having the light showing in the render,

Also it's a good idea sometimes to uncheck the option "Affect Reflections" to avoid having the lights reflecting

On reflective objects.

 

For the VrayLight Plane, be careful for the direction of the arrow, because

It's in that direction that the light will go.

[Anonymous]

I have tried what you said but the lights still won’t show in the final render, it shows in the first stages of render and in the viewport but not in final render.

[miledrizk · Accepted solution]

Ok, press 8 on the keyboard, and in the dialog that opens check the Exposure Control rollout to 

See if any exposure control method is applied, if so change it to <No Exposure Control> and try again

[Anonymous]

It finally worked! Thank you so much.

[miledrizk]

Welcome!

glad it was solved! 🙂

[Anonymous]

My 8 on the keyboard doesn't give any dialog box. how to get it done? Please help. I have tried putting up different lights in a modal but only one or

---

@miledrizk wrote:

Ok, press 8 on the keyboard, and in the dialog that opens check the Exposure Control rollout to 

See if any exposure control method is applied, if so change it to <No Exposure Control> and try again

---

two are showing up in the render.

[Anonymous]

I have a very similar problem. My VRay lights do what they want in the render, sometimes visible, somethimes not (same machine, same scene, same settings). I could fix it in an old scene by restarting Maya and the lights showed properly in the first render. 

But in a more recent scene they do not show at all. 

I tried to find out what 8 is supposed to do on the keyboard but it doesn't seem to be an option in my Maya 2018 version (couldn't find Exposure Control either). 

Can someone explain the mysterious 8 or has another approach? This is the only thread that seems to cover my problem somehow. 

[astrid.carvalhoTJJ72]

Omg! I was having the same problem. Thanks so much for the solution! It was driving me insane!

[Francisco_Penaloza]

For every render engine and 3d Software, you have 3 element that works together to get correct lighting,

First is the light itself, you need to adjust the light intensity or energy as it should happen in real life, this could be with candelas, watts or any other unit used in your 3D Software.

Second the camera, Here you adjust your view and in some software, you adjust the exposure, this means how sensible is the camera is to the light intensity, think of your cellphone or real-world camera.

Third is related to the above, and this is the exposure control (this what is being called with shortcut 8 for 3D Max)

You need to adjust the three of them or two if exposure is combined to your camera, to have correct lighting.

You can place light, but if the intensity is too low then everything is will be dark.

IF you light intensity are way high but your exposure is to low then everything will be dark and vice-versa.

Please refer to the Help docs of your software to get the basics of how this system works.