lecture

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.

Take a 40-Minute Tour Through the History of Photography

Great Britain's Royal Institution has put together a fascinating "tour through the history of photography." Using his own camera collection as a jumping off point, chemist Andrew Szydlo takes you through a sort of "crash course" on the history of photography in 41 minutes.

Does Photographing a Moment Steal the Experience From You?

Countless photographs are snapped every day by people looking to preserve their life's experiences, but is the incessant picture taking actually robbing us of them? Travel photographer and writer Erin Sullivan recently gave this interesting 8-minute TED Talk on the subject.

Using Drones to Shoot War Zones

Photographer and director Joey L has been using camera drones to capture aerial photos and videos in conflict zones. Here's a 21-minute talk he recently gave on his work at Hardwired NYC.

The Wildlife Photographer Who Shoots in England’s Urban Jungle

Want to be a wildlife photographer but find it hard to get out of the city? Try shooting urban wildlife. Here's an inspiring 13-minute Nat Geo Live! talk in which photographer Bertie Gregory shares stories about his adventures in capturing wild animals on camera in England's urban jungles.

TEDx Talk: Babycakes Romero Discusses ‘The Death of Conversation’

Street photographer Babycakes Romero scored a viral hit last year with his project "The Death of Conversation," a series of photos showing people "together" but lost in the worlds of their own smartphones.

Romero was recently invited to TEDxBergamo in Italy to talk about the project and his thoughts on the images. You can watch the 16-minute presentation above.

Chris Burkard on the Joy of Photographing Surfers in Freezing Waters

Chris Burkard is a California-based surf photographer who has shot for some of the biggest companies and publications in the world. After years of shooting on popular, sun-soaked beaches and making a living through his "dream job," Burkard began to yearn for beaches that weren't dominated by tourists and the comforts of civilization. So, he began traveling to remote -- and often frigid -- shores around the world for surf photos that are off the beaten path.

Photographer Shares How He Spent Two Years Living on Photos Instead of Money

Back in 2012, we wrote about a project called "Pixel Trade" by Australian photographer Shantanu Starick. The basic idea was simple but crazy: Starick wanted to travel through all seven continents on the globe without ever spending any currency. Instead, he would try to trade his services as a photographer to people willing to provide him with shelter, food, and transportation.

Starick recently appeared at Behance's 99U to give a 20-minute talk on spending the past two years living on photos instead of money.

The Only Known Photograph of Einstein Deriving his Famous E=mc2 Equation

At a public lecture in Pittsburgh in 1934, four hundred lucky students were privy to a lecture by Albert Einstein, in which the great man mathematically derived his famous mass-energy equivalence equation: E=mc2. What you see above is a photo from that lecture, and what is thought to be the only surviving photo that shows Einstein working on that derivation.

Cesar Kuriyama on Documenting His Life with One Second of Video Each Day

Director Cesar Kuriyama received a good bit of attention on the Internet last year for capturing 1 second of video on each day of his 30th year of life, and then turning the snippets into a beautiful recap of his year. The video premiered during a TED talk Kuriyama gave in March. That talk has just been published by TED, and can be seen above.

Exploring and Photographing the Sewers of Major Cities Around the World

Last year, New York-based guerrilla historian, urban explorer and photographer Steve Duncan gave an 18-minute talk (seen in the video above) to the audience at TEDxPhoenixville. Duncan spoke on his motivations for going deep into the underground infrastructure in major cities around the world, peeling back layers of a city to see and document things that are hidden to people above ground.

Eyeballs and Fine Art: Tyler Shields’ Take on Standing Out as a Photographer

Tyler Shields has led a very successful career -- both as a photographer and previously as a skater -- and in his talk at Luminance 2012 he spent some time explaining how he differentiates himself in an increasingly photographed world.

Specifically, he spends time explaining that there is photography that gets you "eyeballs" (viewers and attention for your work) and photography that gets you paid. (Warning: The video includes some strong language and a few potentially offensive PG-13 photos.)

A Talk by NASA Astronaut Donald Pettit on Doing Photography in Space

Want to know how astronauts photograph in space? Just ask Donald Pettit, NASA astronaut and “amateur” photographer. Donald Pettit has called the International Space Station home for over 370 days, and in that time he’s captured some of the most mind-blowing photos of space – and Earth – we’ve ever seen.

Great Two-Hour Lectures on How to Use Photoshop and Lightroom

Looking for free lessons on how to get started with using Adobe Photoshop and Lightroom to post-process your photographs? Look no further than the official YouTube channel of New York City camera shop B&H Photo Video. The store often invites well-known professional photographers to hold lectures on subjects they're knowledgable in and passionate about. The collection of videos aren't as shared as other shorter tutorial videos you'll find online due to their great lengths -- they run up to two hours each -- but they're fantastic resources for learning the ins and outs of photography.

In the video above, photographer Tim Grey offers an overview of using Photoshop CS6 for optimizing your photos. His topics include adjustment layers, image cleanup tools, cropping, rotating, correcting perspective, and applying local adjustments.

Kirby Ferguson on How Creativity Comes from Without, Not from Within

Try imagining a make-believe creature that has absolutely no basis in reality. Can you? Not really. The truth is, everything imaginary is simply a rehash of things that actually exist... just in a combination that doesn't exist. Aliens are simply strange combinations of humans and other creatures that we know. Unicorns are horses with horns. Bigfoot is some guy that accidentally spilled Rogaine all over his body.

This is the basis for writer Kirby Ferguson's big idea: that "everything is a remix." He created a popular four part video series on this topic over the past year, and recently he was invited by TED to give the condensed, sub-10-minute version of it that's shown above.

Inspiring Photographer Talks @Google

On of the neat things about working at Google is the fact that the company loves letting its employees hear from the world's best minds through the AtGoogleTalks. Through the series of lectures, Google invites well-known individuals to share on their area of expertise for 40-70 minutes. In addition to the thousands of politicians, musicians, and entertainers who have shared so far, there have also been a number of photographers invited for Photographers@Google presentations.

The video above shows a lecture given by HDR landscape photographer Trey Ratcliff last year.