Less Reflective Glass?

I’m getting too much reflection.

I have at my disposal:

Color
Intensity
Fresnel
Sharpness
Type

What should I tweak?

Edit the material definition and reduce the Intensity in the Advanced Material panel.
Here’s a link to details with example images:
http://help.mcneel.com/en/flamingo/5/help/material-type-advanced

Thank you, John

That’s a great link, exactly what I’ve been after.