« on: February 02, 2015, 12:01:41 PM »
I'm playing around with some long exposures and wondered if circular polarizers should be used with an nd filter. At 24mm, I get really bad vignetting. It looked like the filter rings were actually visible in the shots of 28mm or wider, so the corners are all black. I was shooting w/ a 24-105mm w/ a circular polarizer and 10-stop nd filter screwed on top of each other. While doing long exposure, is a circular polarizer even necessary? Thanks for the advice!