Reflecting light

[ern]

Hi I'm trying to create the effect of a spotlight reflecting it's light in a mirror, I'm new to Vray and don't know how?

I'm using caustics but I'm not getting any light reflected back from the mirror

Please direct me to a tutorial

Thanks

ERN

[ern]

By the way I'm using a photometric light

[natty]

im not sure becuase i havent tested it But i dont think Photometric light Produce's photons = no caustics.

Natty

[losbellos]

i think dont waste your time with it, simply put a directional light, uncheck diffuse, adn specular. and you are done, set the number of photons, and the causetics, tweak the multiplier and enjoy!
Photometric lights will make your lighting, directional makes the caustics.

-e
BTW photometric lights does makes caustics, but personally I dont like to play to much with the multipliers etc, the directional method is the best I think.

[jujubee]

i could be wrong and this is just semantics, but aren't caustics the effect of the refraction of of a light source on a semi-transparent material? you mean reflection in this case. or does the caustics checkbox actually serve a purpose even when there's no transparent materials in a scene?

[losbellos]

reflections also makes caustics.

[ern]

I found a solution

Hi again

I got the caustics working with the photometric light's by setting the lights caustics multiplier to 2000 and the overall caustic multiplier to 2000........

and it looks realy cool

By the way when you use photometric lights with a specific Lm or Cd. value, say 1800 lm (lumen) you have to chek the photometric lights multiplier box and set it to around 500%, this way you will get a lighting level close to what it would look like with standart Max or Viz radiosity and remember to se Vray to Exponential under "Vray G-buffer color mapping" or else the ligth will look to bright if it is placed near a wall

ern