DMarx-2015-04-16-5941-Edit-Star Trails and the Aurora Borealis Over Lake McDonald.jpg
The Aurora Borealis shines across the night sky as the stars swirl above Glacier National Park, Montana.
Photography Tip: This photo is a single twenty-five minute exposure. When I shot it, the Northern Lights were just a faint band of color across the sky. If the Aurora had been bright and active at this point in the evening then this long-exposure image would have blown out and failed.
The message that I hope to share today is that even a tiny faint light source will slowly become brighter and brighter to the camera if you extend the shutter speed into the seconds, minutes, and hours range.
Learn more about my digital photography workshops and Adobe Photoshop Lightroom training opportunities at http://www.davidmarx.com