Sven Brooke >Dispersion with VRAY
for 3ds max and Vray
level: all
Using Vray in 3ds max
I wanted to find a way to creating an 'in camera' dispersion effect, rather than the traditional method of faking it based on rendering 3 passes each set to slightly different IOR values, and combining the RGB channels in Photoshop or similar. After a bit of experimenting I managed to duplicate the effect using three versions of the VRAY material (one each for red, green and blue) combined with a Shellac material, which turned out to be a lot faster to render than previous dabblings with Vray and Shellac. And had the bonus of creating a dispersed caustic effect which i hadn't banked on :)
Test scene with IOR based on glass (1.6). It took a couple of minutes to render
Same scene different arrangement
©Sven Brooke