I got curious about fresnel lenses and decided to make a fresnel light in ZBrush to see what it would do in a rendering engine.
Its very interesting as it turns out!
I seriously doubt that the lens is accurate, I was just seeing if I could make one, turned out to be easy and eventually I should make one that is physically accurate. At least if I can figure out how!
I have found that KeyShot is FAR more fun if you make your own lights and get rid of those hdr images, all they are for me is a distraction. Creating everything from scratch is much more interesting and, since I am still learning what can be done, very educational.
Heres the .Bip file:
https://dl.dropboxusercontent.com/u/76310757/ItsMaddnessITellYou/FresnelLightTestScene.zip
It looks like this:
(https://dl.dropboxusercontent.com/u/76310757/ItsMaddnessITellYou/InitalTestResult.png)
And like this if you screw around a bit:
(https://dl.dropboxusercontent.com/u/76310757/ItsMaddnessITellYou/FirstFresnellTestRender.jpg)
I hope this is useful to someone, it was fun to make!
Cheers!
Mealea