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Tuesday, September 23, 2014

Light Pollution in Arches N.P.

A mid-September Milky Way slices through a light-painted Delicate Arch, Arches N.P. ~ © Royce Bair
Last week, I was in Arches National Park teaching a "NightScape" workshop. We had a great time, and the conditions couldn't have been more perfect. This wonderful national park has been luring me here for over thirty years. I just can't get enough of the unique sandstone sculptures —and its obvious with the increased automobile traffic and the growth of the nearby town of Moab, that many others feel the same way. It not surprising that the calm and secluded experiences I had three decades ago can no longer be enjoyed —we must learn to share theses geological wonders with many others, both day and night.

Lights from passing automobiles now makes it quite difficult to photography Balanced Rock at night, because it is so close to the main park road. Although Delicate Arch is about a mile and a half from the nearest road, light pollution from the nearby town of Moab, less than 12 miles away, now makes a considerable impact on the night sky behind the arch (compare the photo below, with the one above).

The night sky BEFORE darkening (in Photoshop) the area under arch. The town of Moab is 12 miles
away, just behind the center of the arch. ~ © Royce Bair

The first time I came to photographed Delicate Arch, thirty years ago, there were only a half-dozen people surrounding the arch at sunset. Last week (and each time I've gone in the past few years) there have been over 100 people! Night photographers should still not be too concerned though, as the crowds quickly disperse after sunset. Other than myself and my workshop participants, no more than two or three stay longer than two hours after sunset, and none more than three or four hours.

The "sunset" crowd behind me at Delicate Arch last week... ~ © Royce Bair
...and the crowd in front of me at Delicate Arch. Usually, less than two or three people hang around
for the stars to appear, so night photographers are left with few distractions other than increasing
light pollution from distant cars, air traffic in the sky, and the town of Moab, Utah. ~ © Royce Bair
Use promo code "nightcape" to save 20% off premium stock photography at prime.500px.com

Friday, September 12, 2014

Gateway to Wall Street by Wayne Pinkston

"Gateway" to Wall Street, on the Navajo Loop Trail, in Bryce Canyon N.P. ~ © John Wayne Pinkston
Canon 6D, 15mm Sigma fisheye f/2.8, 30 sec. @ f/2.8, ISO 6400 — with light painting
"Seeking the Light", descending into Wall Street, Navajo Loop Trail, in Bryce Canyon N.P. ~ © John Wayne Pinkston
Canon 6D, 15mm Sigma fisheye f/2.8, 30 sec. @ f/2.8, ISO 6400 — with light painting (click to enlarge)
John Wayne Pinkston, or "Wayne", as he is known by his friends, recently made these photos in the early morning hours (about 2:00 AM) on August 30th, during a solo hike down Bryce Canyon's narrow "Wall Street", on the Navajo Loop Trail. Wayne had just finished one of my NightScape workshops in Bryce, and was anxious to put some of his knowledge to work.

Tools and Equipment: Wayne had already come prepared with several of the lights I recommend, along with some of his own improvisations. The "Gateway" arch was lighted from behind with an F&V Z96 LED Panel Light (with warming filter), and the canyon walls were lit with reflected light from a hand held Harbor Freight, Luminar Work, quartz halogen spotlight. To control stray light from his spotlight, Wayne used a rolled up plastic dinner placemat as a snoot! Even with the dimmer control at the Z96's lowest setting, the LED light was too bright coming through the arched tunnel, and Wayne again had to improvise.

"Subway napkins work really well. I had a pocket full of them. I wrapped two or three napkins around the light because it was too bright, and that worked well," quipped Wayne.

For "Seeking the Light", Wayne used two F&V Z96 LED's and a Chromo Inc. LED CI-160 (another dimmable panel light) spaced along the trail. All had their warming filters and diffusion attached, but he had to use an additional theatrical gel sheet on the CI-160 to make it match the two Z96's. (Editor's Note: a larger version of the CI-160, with 216 LED lights is also available: Chromo Inc. LED CI-216.)

The Process: In both photos, Wayne used camera White Balance settings of 3500º - 3600º K, respectively. This allowed him to more closely match his light painted earthly subjects, and give him a cooler night sky. He also used the WB Shift function in the Menu settings —selecting Blue +2 and Magenta +2, in an attempt to get the sky bluer rather than cyan.

The images were processed in Adobe Photoshop CS6. The adjustments were limited. In Adobe Camera RAW, Wayne increased contrast and performed noise reduction.  In Photoshop,
he selected the sky and canyon walls separately in the Adjustment Layers, and adjusted the contrast for each. He also slightly decreased the saturation of the walls, and slightly increased the saturation of the sky.

Challenges: In "Seeking the Light", Wayne's main challenge was getting uniform lighting on the walls. "I placed the three lights on the ground pointing straight upwards at approximately 20 yard intervals. I found that I had to do a lot of experimenting and adjusting to get them just right. Some lights had to be angled due to outcroppings of rocks. After about a half hour of playing with the lights, I felt they were adequate, and took a number of photos at different angles."

Satisfaction: "My motivation and inspiration for this type of photo came from viewing other photos online, [i.e. Cyclop Arch].  I was attracted to the perspective of looking straight up and viewing the Milky Way, because these give me the most sense of space and depth as well as your relationship to the towering walls. The viewpoint makes me feel small, and somehow makes the stars feel closer. It was my feeling that the fisheye lens was essential for the perspective."

"I was excited when I got under the camera (the screen was pointed down), and saw the images, realizing the set-up would succeed to some degree. Since I had not tried this before at night, I felt like a kid in elementary school that just got promoted!"

By profession, Wayne Pinkston is a Radiologist. Photography and radiology share many of the same principles as far as image capture, processing, and display.

"I look at images all day at work and then go on vacation and take more images. I became interested in photography in college, and that likely influenced me becoming interested in radiolgy. I had a long break from photography while my kids were growing up and rekindled the interest in the 1990's when we were able to travel to national parks as a family."

More of Wayne's photography can be seen at his website, Lightcrafter.