Eloquent Images by Gary Hart
Insight, information, and inspiration for the inquisitive nature photographer
A Shot in the Dark
Nature’s Light Show, Aurora Over Dyrhólaey Coast, Iceland
Sony α1
Sony 12-24 GM
6 seconds
F/2.8
ISO 6400
At its best, still photography reveals aspects of the world invisible to, or overlooked by, human vision. In Nature photography, we create these visual revelations when we use an extremely fast exposure to freeze a lightning bolt’s intricate detail that disappears too fast for the human eye to register. Or when we dial up a long exposure to turn pinpoint stars into symmetrical arcs that reveal Earth’s rotation.
As a lifelong admirer of the night sky, I’m a huge fan of the camera’s ability to see in the dark far better than I can, extracting stars and celestial color too faint for my eyes. This is possible because cameras can accumulate light over an extended period, and because the camera’s ability to “see” color is less dependent on the amount of light it captures than the human eye is.
No subject more clearly demonstrates the camera’s light gathering ability better than the Milky Way. A relatively faint ribbon of light in even the darkest sky, a high ISO (extremely light sensitive), large aperture, multi-second exposure (30 seconds or less to minimize star streaking) brings to life the exquisite color and detail of starlight infused with interstellar dust and gas.
This ability to accumulate light also helps the camera extract color from apparent darkness. But just as important to the camera’s light gathering advantage over the human eye is the way it does it. The human eye uses a collaboration of rods and cones to collect light, with the rods doing the heavy lifting in low light, pulling enough monochrome information for us to discern shapes, while providing little help with color and depth. The cones that complete the scene with color and depth information require much more light to do their job. But a digital sensor, though blind to depth, captures photons using tiny photosites specifically designed to discern color.
With the first DSLRs, way back in the early 2000s, successful night photography required help from external light, like light painting with artificial light (which I never do) or moonlight (which I did all the time). But sensor technology has improved steadily over the years, not just the sensors’ resolution, but their light capturing ability too. Today I don’t hesitate photographing dark sky, the darker the better. Nevertheless, despite many years photographing the night sky, it wasn’t until 5 years ago that I got to photograph an aurora.
In January of 2019 Don Smith and I had traveled to Iceland to scout for a future photo workshop. We chose winter to ensure the longest, darkest nights for the best chance to view an aurora. Having seen thousand of pictures of the northern (and southern) lights, I believed I had an idea of what to expect, but I had no idea. No. Idea.
Before I start raving about the camera’s ability to photograph an aurora’s unseen color, let me just say that no picture can do justice to the experience of witnessing an aurora in person. I’m not talking about the green, horizon-hugging glow that lucky high-latitude Lower-48 residents enjoy from time to time (that’s still worth staying up and freezing for, BTW), but an actual sky-spanning dance of light beams, waves, and swirls. Rivaled only (in my book) by a total solar eclipse and a brilliant comet, a brilliant aurora display might possibly be the most beautiful thing you’ll ever witness in Nature.
But, despite lacking the dynamics of personal aurora experience, a camera does do better than the eye in one important aurora aspect: color. That’s because to the naked eye, many aurora displays aren’t bright enough to engage the cones and appear monochrome to our eyes. A camera, on the other hand, reveals auroras in all their kaleidoscopic glory. And though color in an extremely strong aurora is indeed plainly visible to the unaided eye, no matter how strong the aurora, the camera will always “see” more color than we will.
Since that first visit, I’ve returned to Iceland most winters, and have viewed many beautiful northern lights shows. Each was unique and beautiful in its own way, but hold a gun to my head and ask me to pick a favorite, and I think it would be a tie between back-to-back nights early this year (January)—first at Kirkjufell, then at Dyrhólaey on the South Coast. The Kirkjufell night was special because it featured a spectacular display above an Iceland icon. The Dyrhólaey show, while lacking the instantly recognizable foreground of the previous night, was even brighter and more expansive, at times spanning the entire sky.
I blogged about both nights earlier this year:
- Kirkjufell: It’s All About the People
- Dyrhólaey 1: Lights, Camera, Action!
- Dyrhólaey 2: Blessings
The image I’m sharing today is another one from the Dyrhólaey night. With our eyes we could actually see a little of the green, but not the red. And as beautiful as this image is, even with my 12 – 24 lens at its widest, it didn’t come close to capturing the entire horizon-spanning display.
One more thing
When there’s not enough light for visible color, colors in the night sky become the photographer’s processing choice. For my Milky Way images, that’s mostly a matter of adjusting my white balance in Lightroom until sky color feels right. I find a lot of other photographers’ night images too cyan for my taste, and if you look at my older night images, you’ll see that I used to skew them fairly blue. But in my recent night images, I’ve gone for something closer to black with just a hint of blue/violet, which is what I’ve done with the background sky in this image.
The color of the northern lights is similarly subjective, and starts with the color temperature my camera’s auto white balance chooses. Since I don’t have as much experience photographing auroras as I do the Milky Way, I’ve started identifying northern lights images that I like, taken by other photographers, then try to adjust my own images’ white balance in Lightroom to something that comes close to that. But looking at the gallery below, with greens that skew toward yellow (warmer), and some that skew toward blue (cooler), it’s clear that this is still a work in progress. But it does appear that I’m moving a toward cooler aurora images. And believe it or not, none of my northern lights images have any saturation added because they don’t need it—just giving the scene a little more light than my eyes see is all that’s necessary to bring out this eye-popping color.
Join Don and Me in Iceland (add yourself to the waiting list for first shot at the next trip)
The Lights Fantastic
Click any image to scroll through the gallery LARGE
Eloquent Images by Gary Hart 
These images are absolutely stunning Gary! I hope to see the northern lights in person one day.
Thank you, Brad. It’s definitely worth whatever effort it takes.
Such epic nights we had and what beautiful photos you took! Thanks for sharing your knowledge which allowed me to also get some wonderful photos that help me remember the depth of feeling of those two very special nights. I hope that this next month’s workshop also brings you more memorable moments to capture. Safe travels!
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