Large Light Spots in VRay - cannot get rid, please help!!

[matthewlazenby]

Hey can anybody help??

I have tried everything to get rid of these large light spots in VRay, however they will not go away. I have never seen this before in any past render that I have done.

I have attached the visual and also the screen shots of my settings.

I have already tried upping the Subdivs but nothing happened.

Please someone help and bring my sanity back, Im losing the plot!!

Cheers

Matt

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[rspierenburg]

Are you pehaps trying to light using an Emissive material? That usually causes similar results.

[valerostudio]

Yes, an emissive material can certainly do that. How are you lighting this scene? An HDRI can also cause these splotches. If you sign up for the new beta, dome light is a new feature that now allows you to light a scene with an HDRI. No more blurred workarounds.

[matthewlazenby]

Hi Guys, sorry I did not realise anyone had replied. Thank you though.

I am using a single window, which is open to the GI light, and also two orange-coloured omni lights. I have deleted the omni lights before and the blotches were still there, so I am assuming that it must be something to do with the GI or possibly the rendering engine, however I have tried a host of different engines and nothing happened. I am not using an emissive material either so it cannot be anything to that.

@valerostudio: I will try the beta, but would you mind explaining 'blurred workarounds', sorry but my Vray terminology is fairly thin.

Cheers again,

Matt

[serjdaher]

a whole bunch of people are having the same issue
follow this
http://sketchupvrayresources.blogspot.ca/2011/07/trick-removing-splotches-in-vray.html

it might also be caustics. i was having the same issue but for me it was glossy reflections that were the problems. it depends on your specific situation. but try it still. i know that vray can be really overwhelming.
cheers