Not that I can remember... But your arrow arcs high, so aim lower than what you want to hit at low-mid distances, I like how I have to take a second to determine the arc and distance and everything before I take my shot. I also love how with the Eagle Eye perk your character take a breath when zoomed in, and releases the breath when zoomed out...
One of my favorite things about this game is...
"breath in... release... breath out... thunk... dead..."