Here’s how to use physical ND filters and polarizing filters on your iPhone camera. Set up on a tripod A tripod is an essential accessory when using filters. For starters, filter systems can be ...

The best neutral density filters, or ND filters, can make a world of difference. Used with the best cameras, they reduce the amount of light entering the lens. For astrophotographers who shoot ...

This is such an important control that many high-end cinema cameras have switchable ND filters built in. For cameras that don ...