Otto Berkeley posted a photo:
I last photographed Butler's Wharf, the beautiful area south-east of Tower Bridge, at sunrise more than two years ago. Since then, I've frequently thought about revisiting the spot to reshoot it for a cleaner and sharper finish, and earlier in the morning to capture the transition from blue hour to golden hour.
This part of the Thames Path is invariably very busy in the evenings because of the stunning view from its bars and restaurants, yet eerily quiet at dawn, especially during the early light in the summer months, when boat activity along the Thames is at a minimum until around 5am and the reflections in the river remain undisturbed. With all of this in mind, I kept this shoot on hold until a calm morning at the end of May, when wind speeds were low and the skies were clear.
The base exposure for this image was my final shot of the morning, lasting six-and-a-half minutes and perfectly exposing for the pink tones emerging on the horizon, as well as revealing a hint of sunlight along the edge of the Cheesegrater, Heron Tower and the Gherkin. On top of this exposure, I blended in exposures from the start of my shoot, which had begun in darkness, incorporating the night lights along Tower Bridge and inside the neighbouring buildings. Using a combination of the Pen Tool and the Channels panel in Photoshop, I then created selections of the sky, the river and the cityscape, as well as the Thames Path, its lampposts and its railing leading into the distance. This allowed me to selectively focus on each area's tonal contrast, colour balance and exposure, editing a soft and dreamy sky without affecting the high-contrast portions of the cityscape.
Having removed a couple of cranes and an Alcohol Control Area sign attached to one of the lampposts, the final adjustments I made were a mixture of low-opacity Colour Lookups, Gradient Maps and Selective Colour adjustments in Photoshop alongside selective Tonal Contrast adjustments in Colour Efex Pro. This was the most extensive part of the post-processing stage, largely because each individual portion of the image was edited one at a time, but each adjustment was incremental. I wanted to bring out the chilly early-morning tones in the shadows as they were gradually suffused with golden-hour warmth, but at the same time it was important to me to retain the original exposure's clean vibrance and energy, and hopefully to capture the mood and atmosphere while standing there, watching the early-morning light spread across the cityscape.
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A big study suggests that radiologists vary widely in their assessment of density, a risk factor for breast cancer. And density is just one component of breast cancer risk, the researchers underscore.
Filmmaker Alex Gibney's new documentary focuses on the large-scale implications of computer malware. Critic John Powers calls Zero Days an important — and chilling — film.
Hollywood has already cast Jennifer Lawrence to star in a movie about the embattled biotech firm. How did founder Elizabeth Holmes go from self-made billionaire to an estimated worth of $0? Read on.
scott.hammond34 posted a photo:
Wider view of a similar recent image, shot with a 50mm F1.4 which i do think is sharper than the 70-200 F4L IS at smaller apertures (previous shot). Couldn't decide which one i preferred so both went up. Thanks for viewing :-)
3 shot HDR image
A Sydney University researcher has burned naphthalene to create a material that can hold quantum qubit information at room temperatures.…
FurtiveOutsider posted a photo:
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JB_1984 posted a photo:
Image of Millwall Outer Dock during Monday evening's golden hour.
This has become one of my favourite spots for photography in all of London since I first visited it in 2014. The Baltimore Tower is a new edition to the scene since that first visit.
RobinKellam posted a photo:
RobinKellam posted a photo:
sheila mckinney posted a photo:
iPhone 6
Snapseed
Enlight
London
18 July 2016
beatricepreve posted a photo:
Big Ben and Westminster Bridge at dusk, London, UK
beatricepreve posted a photo:
Big Ben and Westminster Bridge at dusk, London, UK
beatricepreve posted a photo:
Big Ben and Westminster Bridge at dusk, London, UK
Hayashina posted a photo:
London 18/7/2016
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By American Society of Nephrology President Raymond C. Harris, MD, FASN and XPRIZE CEO, Marcus Shingles
Kidney transplantation is the optimal form of therapy for the nearly half million Americans and millions of people around the world suffering from kidney failure. However, the kidney transplant waitlist--approximately 100,000 Americans--is growing, and the average wait time for a transplant is five years. Most will die before their name is ever called.
About 450,000 Americans have failed kidneys and - in the absence of transplant options -- depend on dialysis to live. Dialysis keeps them alive but their quality of life is often dismal, and their life expectancy is often short. At a cost of nearly $35 billion annually--more than the entire budget for the National Institutes of Health--Medicare pays for dialysis for every citizen with kidney failure regardless of age. Despite this remarkable commitment, investment in innovations for kidney treatments has been inadequate for decades.
Unlike kidney transplants, dialysis is not a cure and does not return patients to full health or a normal lifestyle. Patients receiving dialysis endure three to four hour treatment three or more times a week. Their blood is removed, filtered through a machine that clears toxins and waste the kidneys would normally remove, and returned. The process is emotionally exhausting and physically debilitating. Only 1 in 5 patients of working age who are on dialysis have jobs. Approximately half of the dialysis population dies within three years.
Kidney diseases disproportionately affect minority populations. African Americans, Asian Americans, Hispanics, and Native Americans are up to four times more likely to develop kidney failure than Caucasians. African Americans in low income neighborhoods are also 57 percent less likely to make the transplant list than others.
Recognizing that this kidney transplant crisis is largely due to organ shortages, the Obama Administration recently convened the White House Organ Summit. At the Summit, the American Society of Nephrology (ASN) announced its pledge of the first $7 million dollars toward a global prize competition to develop a novel wearable or implantable device that replaces kidney function and improves patient quality of life, in partnership with the XPRIZE Foundation.
ASN and XPRIZE believe we must do better for the millions of people with kidney failure. XPRIZE designs and implements innovative competition models that utilize the unique combination of gamification, crowd-sourcing, incentive prize theory, and exponential technologies to solve the world's grandest challenges. We believe that a global competition will help create a fundamental shift in the way we treat kidney failure by incentivizing the development of a better alternative to dialysis, improving patients' health and the quality of their lives. Research in bioengineering, matrix technology, and cell biology is poised to ignite revolutionary changes in the options clinicians can offer people with kidney diseases. A global prize competition would bring together scientists and innovators to catalyze transformative innovation.
We commend the White House for putting a spotlight on this critical issue, and we call on others to join us in this serious and time-sensitive initiative to help finalize, fund, and execute this competition that can ultimately improve treatment options for kidney failure patients and the clinicians who treat them. Learn more at http://www.xprize.org/prizes/future-prizes/kidney-disease and http://www.asn-online.org/news/2016/0613-organ-summit.aspx.Visit XPRIZE at xprize.org; follow us on Facebook, Twitter and Google+; and get our newsletter to stay informed.
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