optics

DxO Update Brings 1,192 New Optics Modules And More

The French photo software company DxO has released an update to its Optics Modules that it says will give photographers the best possible performance from their camera and lens combinations, correcting lens imperfections and softness with "unparalleled precision".

Sony Versus Sigma

Sony Versus Sigma: Which 50mm f/1.4 Reigns Supreme?

When Sony and Sigma released lenses with nearly identical specifications (or at least nearly identical target customers), photographic gear scheduling marked a rare alignment. Photographically speaking, the concurrent launch of these two similar lenses is the equivalent of a full solar eclipse—incredibly rare and also amazing to see.

What is Chromatic Aberration? How to Deal with Color Fringing

If you've ever noticed an unsightly colored fringe or halo on objects in your photographs, you've seen chromatic aberration. It's a common problem in photography and can detract from an otherwise good image. Fortunately, there are ways to minimize or even eliminate it, both before you hit the shutter button and after when editing your picture.

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.

Perfect is Boring: Lens Makers Need to Loosen Up and Have Fun

Over the past few years, I've experienced a number of lenses that were optically stunning. Near-perfect examples of optical technology, lenses like the Sony 135mm f/1.8 (which I reviewed and loved) and 24mm f/1.4 (also loved) along with the Canon RF 28-70mm f/2 or their RF 50mm f/1.2 all exhibited these traits of pushing towards "perfection."

A Simple and Inexpensive Schlieren Optical System Using a Fresnel Lens

Schlieren imaging is a fairly standard optical technique for visualizing heat, sound, or pressure differences in air. Technically, a schlieren system is able to see clear disturbances in air due to slight differences in the speed of light in the air. The technique can be sensitive enough to see the heat rising off a human hand at room temperature.

A Crash Course in 100 Years of Nikon Lens History

Well-known (and controversial) photographer and gear reviewer Ken Rockwell recently put together a fascinating video that is probably best described as a crash course in Nikon lens history. The video covers 100 years worth of Nikon's optical heritage, from the company's original rangefinder glass all the way to the latest lenses for the brand new Z-mount.

Behind the Scenes: Visiting the World’s Largest Digital Camera and Optical Lens

A couple of weeks ago, we shared some photos of the world's largest optical lens, which had just been shipped to the SLAC laboratory in Menlo Park, CA, where it would be joined with the world's largest digital camera. Unfortunately, we obviously weren't actually there for the reveal of this record breaking lens, but YouTube channel Physics Girl was.

Goodbye Aberration: Physicist Solves 2,000-Year-Old Optical Problem

When you look through your viewfinder and things seem a little bit blurry or lacking definition, it's probably because you are using an “el cheapo” lens. So you read reviews and buy a much more expensive lens, and what do you do next?