Chrome problem with the Beta

[Kevin F]

He just told you Kevin. Haven't ried this in a while. Mr. Lampost seemed to like this better also.

"1. Index of refraction is OK with higher values, so try increasing that if you want a good amount of reflectivity at any angle. "

Yes, I know what he said, but I don't read it as having to increase refractive index to silly values which you have to do to get anything like chrome.
I've uploaded my original with high reflections (10) and a new one with reflection 1 and refractive index 8. the later is better overall but the first looks more chrome like.

[buzzzzz1]

The one difference I notice is, the sharp edges on the 2nd image look better.

[Mandrake]

The thing I notice is that the render engine may not be finishing the work.
Or is that copper color supposed to be there?

[Matt]

The index of refraction parameter is for Fresnel reflection, whereas chrome is different. Chrome reflects light uniformly in all directions, but you can approximate that by using very high indices of refraction. 20 or 30 are high enough to get nearly uniform reflection.

The first image probably looks more like what you expect just because it is brighter. But the reflections are brighter than the sky it's reflecting, which is impossible. So really what you need to do is make the sky brighter, not make the object more reflective.

Matt

[Matt]

The thing I notice is that the render engine may not be finishing the work.
Or is that copper color supposed to be there?

That's just the reflection of the other part of the object, which is reflecting sky.

[dandelO]

IOR=30 looks great with reflectivity=1. Thanks, Matt!

[Mandrake]

Wow, that's high, 30 ior, dandelo, I'll give that a try. Thanks

[Kevin F]

Hi, my "pan of potatoes in the desert" has ior 30 and reflectivity 1 for the pan.
works for me  -thanx to Matt.

[Mr_Lamppost]

I have been out of the loop for a while so only just noticed this.  My results for chrome, referred to earlier were posted over on Ashundar:

http://www.ashundar.com/index.php?topic=4043.msg35755#msg35755

I have added the Soft Chrome clip to the file sharing section.

http://forums.planetside.co.uk/index.php?topic=5341.new#new