Thanks to Pownalite I Tested the Polar Pro ND 16 today. Wow! These turn the Q500 4K, CGO3 into a quality camera. I've been disheartened with the camera quality. But the Polar Pro makes the whites white, the greens green, the blues blue. Blacks black. Reduces the horrible noise. Created this image this afternoon at the 360 Grill & Marriott Shoals Hotel & Spa in Florence, Alabama, with the scenic Tennessee River and TVA Wilson *** in the background. When selecting a higher shutter speed than the video shutter speed, it causes more vignetting. Not the filter, but the camera. Does it with no filter too. M2C.