Circular polarized light that emerges from the polarizer is reflected by the partially-reflecting mirror with an intensity ... Clear aperture: describes the surface area of an optical filter which is ...

The polarizer and phototransistor taped to the iPhone. [Dave] wrote to tip us off about [Paul Wallace]’s take on the same idea, a DOLPi-inspired polarimetric camera using an iPhone with an ...

This is a combination of a neutral density filter and a circular polarizer, eliminating the need to carry more filters for those who often shoot with both. This would be particularly useful for ...

From the best travel camera to the tripods, bags and accessories to consider, this is what you should keep in mind for your ...

A Wollaston prism, inverted by William Hyde Wollaston, is an optical device that manipulates polarized light. It separates randomly polarized or non-polarized light ...

While you can’t control the quality of your water source, whether it’s a private well or a municipal water system, you can choose an effective water filter. There are a range of water filter ...

Cary Wolinsky and Bob Caputo have a combined 64 years of experience photographing stories for National Geographic and other publications. Along the way, they learned a thing or two about making ...

Walker, Thomas J. and Littell, Ramon C. 1994. Orientation of Fall‐migrating Butterflies in North Peninsular Florida and Source Areas. Ethology, Vol. 98, Issue. 1, p ...

Emerging in the 2011 time frame and using polarizer overlays ... and the viewer wears polarized glasses to filter the frames to the appropriate eyes. Dating back to the 1950s, the linear polarized ...

It includes two wide-angle lenses, two macro lenses, a 2x telephoto zoom lens, a 198-degree fish-eye lens, a circular polarizer/linear lens, a starburst lens, and a kaleidoscope lens—all of ...

In this Alaska packing list for summer, you'll get in-depth real-world advice on what to bring (and what to leave at home).