The Fresnel lighthouse lens used a large lamp at the focal plane as its light source. It also contained a central panel of magnifying glasses surrounded above and below by concentric rings of ...

Naval aviators know that traffic light as the Improved Fresnel Lens Optical Landing System. A pilot uses IFLOLS to discern his glide slope—the angle at which aircraft descend and land—by ...

The lens shapes light as it comes into the camera – but lenses can also shape light as it comes out of a light source. Lately, I’ve noticed several photographers using not just interchangeable ...

The LightLeak series has a feature that I’ve never seen before on a lens: a window that opens and shuts to create real light leak effects in-camera. A light leak on a film camera is, technically ...

PSVR 2, the Meta Quest 3, or something from HTC Vive? It's a great year to shop around for the best VR headsets. The best VR headsets might be in a golden era right now. Not only do we have some ...

Looking to get into virtual reality? Meta Quest 3 represents a significant step forward in virtual reality (VR) and a great starting point for everyone. The Meta Quest 3S also offers a cheaper ...

The TG-7 continues the tradition with a useful 24-100mm f/2.0-4.9 zoom lens that does a good job for underwater, low-light, and macro photography. The camera is practically indestructible and can ...

From lens focal lengths and fill-flash to portraits, macro or stunning landscapes there are techniques for everyone. Learn how to use metering, considering composition and shoot everything from ...

Photographers and videographers often debate the quality of the bokeh, or the out-of-focus points of light, coming from a lens – but a new lens by TTArtisan gives creatives two different styles of ...

Artist's impression of the light concentration at the 'wall' at the end of the waveguide. Credit: AMOLF. A team of researchers from the Netherlands and the U.S. has found a new way to concentrate ...