SG - remember it's time for you to use matmatic?

Matmatic will give you the true Fresnel functions that work all the way back to P5.

Here is a totally credible chrome with built-in automatic GC and adjustable IOR.

The IOR of 11.2 produces 70% reflection at normal incidence - about average for chrome. The very best most expensive chrome is 85% - but almost never keeps that - some (tiny) level of oxidation always sets in.

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ior= PM(11.2, "IOR") # parameterized index of refraction

rv = TrueFresnel(ior) # the Fresnel equation

reflect = AGC(Reflect()) # the reflection node (anti-gamma applied since this is incoming material)

output = rv * reflect # the correctly modulated reflection

View(GC(output)) # the finished surface

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That was the long version, for you to learn from. Here's the short version.

View(GC(TrueFresnel(PM(11.2, "IOR")) * AGC(Reflect())))

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)