optics

Why Lens Coatings Are So Important in Photography

In recent years, some lens designers have updated their lenses with new lens coatings. For instance, Pentax's newest limited lenses feature an existing optical design with only a few improvements, including a better lens coating.

Boris FX Optics Plugin

Boris FX Optics Brings Cinema Effects to Photoshop and Lightroom

Academy award-winning software developer Boris FX has launched a new version of the Optics plugin for Adobe Photoshop and Lightroom Classic that the company says will add "the same high-end cinematic look and effects to photos that the film and television industry has relied on for over twenty years."

Lenses Don’t Cause Perspective Distortion and ‘Lens Compression’

The focal length of lenses doesn't cause perspective distortion, which is often explained as "lens compression." Period. Now before you call me crazy and dismiss whatever I have to say, I’d like to invite you to take a dive into how lenses work and what actually causes perspective distortion.

How a Fresnel Lens Works, Explained with a Simple Blackboard Model

If you've heard of Fresnel lenses in photography before but have no idea what they are or how they work, here's a fantastic short primer. In this 3.5-minute video, physicist David G. Willey (AKA the Mad Scientist) explains the science behind the lens style using a simple and easy-to-understand model on a blackboard.

Diffraction Explained: Why Your Lens is Worse at f/22 than f/8

It's common knowledge that most lenses are at their best (i.e. sharpest) between f/5.6 and f/8, depending on the lens. But why is that? Why does stopping down further actually make the image softer? This is what YouTuber ZY Productions explains in the video above.

Hypercentric Optics: This Camera Lens Can See Behind Objects

Engineer and YouTuber Ben Krasnow over at Applied Science has put together a fascinating little optical demonstration that explains the physics behind 'hypercentric' optics and how they allow you to see around and behind objects. He even shows you how to build your own.

Reaching the Megapixel Limit (for 35mm Camera Scanning)

Since I first started camera scanning, I've always advocated using the highest resolution camera you can get ahold of. (My first camera scans were with the 1.3-megapixel Nikon E2n, so it's been a long road.) That advice is changing.