Q–How can I use a polarizing filter to deepen the blue of the sky in my photographs? A–To get the maxinmum effect in this use, it is necessary to have a certain relationship between the position of ...

Because I have a new toy, you all have to suffer through blog posts about my camera every weekend. Until I get bored of it. Which is not yet. Back in the day, I had a circular polarizing filter for my ...

Back in the days of analog photography, filters were a photographer’s best friend. Today, with digital photography, many of the effects filters had on film can be replicated during post-processing, ...

Just a few weeks ago while I was down in the Caribbean, I had the fun of testing out an iPhone 5 camera polarizing filter from Photojojo. While the clip-on filter worked -- sort of -- it had a problem ...

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 ...

One of last year’s Hackaday Prize finalists was the DOLPi, [Dave Prutchi]’s polarimetric camera which used an LCD sheet from a welder’s mask placed in front of a Raspberry Pi camera. Multiple images ...

Reader Question: Are lens filters still necessary for digital photography? Are there filters that National Geographic photographers use to make their pictures look better? My Answer: Most National ...