4k footage: 10 Things I Wish I'd Known Earlier
http://zandernppb104.yousher.com/forget-4k-stock-footage-10-reasons-why-you-no-longer-need-it
A polarizing filter is manufactured up of two pieces of glass which when rotated cut out all glare on non-metallic surfaces. Light travels in waves – these waves vacation in all directions and at different rates