L2M2AS1 Part D Lr. Gradient Filter. ISO 3200 10mm 30.0 sec f/3.5 Nikon D7100. What a difference! Increased exposure and saturation in the lower half, and darkened blacks to decrease on sky noise. It was cloudy off to the right, but I couldn't resist the stars! Also, to the right there was grass nearby in the foreground that looked messy in a long exp.