What Are ND Camera Filters?

If you are ever planning to shoot photography outside -- whether it be a vibrant cityscape or gorgeous landscape-- you will ...
Digital Trends

ND or polarizer? The Sandmarc Hybrid Filter for iPhone gives you both

Neutral density (ND) filters are a requirement for shooting smooth video in bright light, and circular polarizing (CPL) filters are often needed to improve contrast or darken a bright sky — but what ...