Hotspot, Falloff and Transition Curve for Vraylight

[vlado]

The problem with just implementing Maya's Barn Doors is to get the edge of the barn doors to be soft you have to adjust the Penumbra angle and Dropoff of the light source, which I don't believe vray has.

We support almost all options of the Maya spot lights, penumbra and dropoff included.

And the barn doors are square only, as opposed to also a circular mode.

Would that not be the same as adjusting the penumbra/dropoff?

In any case, will make a note to look into that.

Best regards,
Vlado

[samuel_bubat]

Regarding the hotspot and falloff. You can allready do this. If your light is set to directional 1. You can just plug a gradiant ramp in radial mode into the texture slot and use the output curve to control it exactly like shown in the brazil images. Theoretically you can use this also when directional is not 1 but than it´s hard to predict as the light becomes diffuse. But that on the other hand is the idea of Vray lights, beeing diffuse. It would need a Vray Spot light for this option to really make sense wich is kind of obsolete as we have a well working max spot light.
You can use a gradient in the projection slot of a spot light as well to control the falloff precisely as described above. Btw. a radial gradient in a projector slot is also pretty good to create a something like a custom ies distribution inside max.

[soulburn3d]

We support almost all options of the Maya spot lights, penumbra and dropoff included.

I mean in the 3dsmax vray light.

Would that not be the same as adjusting the penumbra/dropoff?

That is true. If you add cone angle / penumbra and dropoff to the 3dsmax vray light, then we wouldn't need a circular set of barn doors.

- Neil

[soulburn3d]

Regarding the hotspot and falloff. You can allready do this.

Sure you can do this, in the same way I can place 4 planes around my light to create barn doors. But having these controls directly in the light makes it far easier. For example, if we had a visible cone for hotspot and falloff, we can precisely place these values in the 3d scene rather than adjust a gradient, render, adjust, render, etc. I appreciate the workaround, but I feel having it in the light is far more versatile.

- Neil

[im.thatoneguy]

+3 votes on behalf of everyone here.

[pixela]

I vote for this too

[AndresAhumada]

Other vote here!

[bardo]

I agree with the request.

One vote from me!

[voltron7]

yes, please!

[vfxronin]

yes pleas thanks you

[Moriah]

++1 pleeease!

[flat]

Why does not Decay of Light support on V-Ray? (Arbitrary attenuation curve)

Like Arnold render.
https://docs.arnoldrenderer.com/display/A5AF3DSUG/Decay

Yes. It is not physically correct. But it is useful for artistic lighting control.

[vlado]

We do not have arbitrary attenuation curves for the V-Ray lights, unfortunately. The standard 3ds Max lights do have them, however, and you can use those if you wish.

Best regards,
Vlado

[flat]

Thank you for answering.
I agree. Use max's Lights