Why is the secular reflection black on the horizontal

[cecil gittens]

I was doing some test and notice (see the attached image) is this normal?

Thanks

Cecil

[Art48]

Uhm not sure what you are implying here but to me it looks correct.

1) Reflection channel is colored/mirror because you're looking at a glancing angle and the object itself is reflected into that surface.
2) Specular is black because of the reason above: Where the object itself is reflected there can't be a light source reflected, too in this particular case. Without seeing your material/lighting setup it is very difficult to tell what you think is wrong with it.

In my opinion this looks reasonable.

[jackieteh]

Try type 0.5 to the reflect glossiness section. (beware: it will slow down your rendering time.)

[joconnell]

Also specular and reflection combine to make the final reflection when you're using glossy values, reflections are generally 100% strength at the glancing angles so you'll get more data in the reflect channel and less in the spec channel. As you start going blurrier with your reflections, you'll start to get more data in the spec channel and less in the reflection channel but the two added up together will be the correct amount of energy reflected.

[cecil gittens]

Thanks guys. It is the first time I notice this. I did not expect
Such strong reflections on the horizontal surface.