A camera lens filter is pretty much what you’d expect: it’s a physical piece of glass that attaches to your camera’s lens, filters the light before it reaches the sensor and, typically, has an effect ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Go shopping for a smartphone today and one of the features you’ll ...

In the United States alone, about 45 million people wear contact lenses to correct their vision. While not as popular as traditional glasses, contact lenses have distinct advantages for eye health and ...

So, you’ve decided to upgrade your camera from a point-and-shoot to an interchangeable lens model. It probably means you’re looking to do more with your photography and you want a camera that can ...

Researchers have shown that consumer-grade 3D printers and low-cost materials can be used to produce multi-element optical ...

Which Canon fisheye lens is best? When seeking a lens that delivers nontraditional photographs and fits your Canon DSLR camera, a Canon fisheye lens is a great tool. This type of lens distorts the ...

“In optics, there was a problem,” says Amit Agrawal, a physicist at the National Institute of Standards and Technology in Gaithersburg, Md. If you wanted to focus a single lens to two different points ...