Posts Tagged ‘contrast’

Power Hungry: Poignant Photos Compare the Meals of the Rich and Poor Throughout History

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Contemporary North Korea

Approximately 40% of food is thrown out in America each year. This amounts to roughly $165 billion (with a ‘b’) worth of food, which could feed half of the 50 million Americans who struggle to put food on the table.

It’s tough statistics like these that inspired photographer Henry Hargreaves and his friend and food stylist Caitlin Levin to create the series Power Hungry: a poignant set of photos that illustrates the inequality between the rich and the poor by comparing what each class’s meals have looked like throughout history.

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Video: How to Use Lightroom to Make Colors ‘Pop’ In Your Autumn Photographs

Autumn is well underway here in the United States, so what better way to honor the colorful season than to share with you a post-production walkthrough by Serge Ramelli that will show you how to make your seasonal snapshots ‘pop’ with color.

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These Beautiful, High-Contrast, Black & White Street Photos are a Testament to Great Composition

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Oftentimes it’s the simplest elements that make or break a photograph, setting it apart from the rest for either better or worse. Today, we have for you a case of the former in this striking series of black and white street photos by photographer Mahmoud Merjan. Read more…

Then & Now Photos Pay Tribute to The 70th Anniversary of The Liberation of Paris

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August 19th, 1944 was the beginning of The Liberation of Paris, the six-day battle between the Parisian-led French Resistance and German forces. Occupied and governed by Nazi Germany since June of 1940, it was on this day that the Parisians decided to strike back against the German garrison. Read more…

Instagram Builds Impressive Photo Editing Features Into Major Version 6.0 Release

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Instagram just released its most significant update since the social photo sharing app enabled video sharing, adding a slew of photo editing features that bring the app in step with other major photo capture and editing apps like VSCO Cam. Read more…

Before and After Pictures of NY Storefronts Document a Decade of Gentrification

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In a city like New York, buildings and their façades can change seemingly overnight. So, what happens to the face of “the city that never sleeps” over the course of a decade? If we take the work of James and Karla Murray as an example, the answer is: a lot. Read more…

Check Out the Canon 70D’s Dual Pixel AF Technology In Action

At the beginning of the week, Canon introduced the latest and greatest addition to its APS-C lineup of DSLRs when it debuted the Canon EOS 70D. In addition to the standard specs you would expect to find in any of Canon’s APS-C cameras (the company has gotten some grief lately regarding its lack of innovation) the 70D packed one very impressive improvement.

The 20.2-megapixel Canon-designed sensor inside features something called “Dual Pixel CMOS AF”: a new autofocus system that promises to vastly improve the speed of Canon’s live view and video AF capabilities. And now, we get to see it in action. Read more…

Striking Black and White Portraits of Art Painted on Faces

Moscow-based photographer Alexander Khokhlov has a striking series of portraits of models with various designs painted onto their faces. The faces are either painted completely black or completely white, and then used as a canvas for some kind of artwork (e.g. a Mickey mouse face, a silhouette, a keyhole). Khokhlov calls the series Weird Beauty.
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Coming to a Camera Near You: Autofocus As Fast as the Human Eye

Contrast detection is one of the two main techniques used in camera autofocus systems. Although focusing speeds continue to improve, the method uses an inefficient “guess and check” method of figuring out a subject’s distance — it doesn’t initially know whether to move focus backward or forward. UT Austin vision researcher Johannes Burge wondered why the human eye is able to instantly focus without the tedious “focus hunting” done by AF systems. He and his advisor then developed a computer algorithm that’s able determine the exact amount of focus error by simply examining features in a scene.

His research paper, published earlier this month, offers proof that there is enough information in a static image to calculate whether the focus is too far or too close. Burge has already patented the technology, which he says could allow for cameras to focus in as little as 10 milliseconds.

(via ScienceNOW via Fast Company)


Image credit: 2011 12×12 Vancouver Photo Marathon by 12×12 Vancouver Photo Marathon

How to Read an MTF Curve to Gauge the Sharpness of a Lens

One of the things you’ve likely seen when looking at product or review pages for lenses is an MTF chart, used by manufacturers to give consumers an idea of how sharp a particular lens is. If you’ve never gotten around to learning how to interpret these charts, here’s a helpful 10-minute video tutorial on the subject. Luminous Landscape and Cambridge in Colour have great tutorials on this as well if you’re more comfortable with text-based tutorials.