shadowing at edge of vray light

[proces2]

in this image you will see some strange banding (hilighted with the red arrows). This is happening at the edge of a large vray light that is floating in the middle of the space and casting light both up and down. I just need some general ambient lighting for the space. But, i don't want this edge band to occur. Any suggestions for fixing it?

the vray light is set to:
double-sided
invisble
ignore light normals
mult: 4.5
store with irrad. map
(i have tried it with smooth surface shadows turned on and off and still get the same results)



for rendering, i am using irrad map + QMC. is this happening because of rendering settings that i may be using or is it because of settings with the light?

thanks,
sean

[jujubee]

Some screen shots of settings would be helpful.

[proces2]

here are the settings for the lights and the rendering:




sorry about the lack of info ... fighting a deadline ...

thanks,
sean

[filip]

hi proces2, i think, that the grey edge could be a problem of overbrighted area caused by your vraylight+HSV exponencial high dark multiplier. try to use larger size of the light and decrease its multiplier and decrease color mapping dark multiplier also.

[proces2]

just tried that out. looks like it is working. thanks!

sean