How to photograph polar lights

Photographing the Polar Lights: A Comprehensive Guide

Overview

The ethereal dance of the polar lights, known as the Aurora Borealis in the Northern Hemisphere and Aurora Australis in the Southern Hemisphere, is a spectacle that photographers dream of capturing. These celestial displays are caused by charged particles from the sun colliding with gases in Earth's atmosphere. While witnessing them is magical, photographing them requires specific equipment and techniques to translate that wonder into a compelling image. This guide will walk you through the essential steps to successfully photograph the aurora, from choosing the right gear to mastering your camera settings.

Equipment Essentials

Before you venture out into the cold to chase the aurora, ensure you have the right tools. Photography in low-light, dynamic conditions demands more than just a smartphone.

Camera Choice

The most crucial piece of equipment is your camera. While some modern smartphones can capture decent aurora shots, a DSLR or mirrorless camera with manual controls offers far superior flexibility and image quality. Look for a camera that allows you to:

• Manually control ISO, aperture, and shutter speed.
• Shoot in RAW format.
• Has good low-light performance (high ISO capabilities with minimal noise).

Lenses

A wide-angle lens is highly recommended, ideally with a focal length between 14mm and 24mm on a full-frame camera (or equivalent on crop sensor cameras). This allows you to capture a broad expanse of the sky, including the scale and movement of the aurora, and often includes foreground elements for context. A fast aperture (f/2.8 or lower) is also beneficial, as it allows more light to reach the sensor, enabling shorter shutter speeds and lower ISO settings.

Tripod

A sturdy tripod is non-negotiable. You will be using long exposure times, meaning the camera needs to remain perfectly still for several seconds. Any movement will result in blurry images. Ensure your tripod is robust enough to withstand wind, especially in remote, open locations where auroras are often viewed.

Other Useful Gear

• Remote Shutter Release or Timer: To avoid touching the camera during the exposure, use a remote release or the camera's built-in timer (2-second delay is often sufficient).
• Extra Batteries: Cold weather drains batteries rapidly. Bring several fully charged spares.
• Headlamp with Red Light: A headlamp is essential for navigating in the dark. A red light setting preserves your night vision and the night vision of others around you.
• Warm Clothing: You'll likely be standing still in freezing temperatures for extended periods. Dress in layers and wear insulated clothing.
• Lens Cleaning Cloth: Dew or frost can form on your lens; keep it clean.

Camera Settings for Aurora Photography

Mastering your camera's settings is key to capturing stunning aurora photos. The ideal settings will vary depending on the aurora's intensity, ambient light, and your specific equipment, but here’s a solid starting point:

File Format

Always shoot in RAW. RAW files contain much more data than JPEGs, giving you significantly more flexibility to adjust exposure, white balance, and recover details in post-processing without degrading image quality.

Focus

Autofocus will not work reliably in the dark. You must use manual focus. The easiest way is to:

1. Set your lens to manual focus (MF).
2. Point your camera at the brightest star or the most distant light source you can see.
3. Zoom in digitally on your camera's LCD screen as much as possible on that star/light.
4. Manually adjust the focus ring until the point of light is as small and sharp as possible.
5. Once focused, tape the focus ring down with gaffer tape to prevent it from shifting. Alternatively, many photographers set their focus to infinity (∞) and then slightly back it off – experiment to find the sharpest point.

Aperture

Set your aperture to the widest setting possible on your lens, typically denoted by the lowest f-number (e.g., f/2.8, f/1.8, or f/1.4). This allows the maximum amount of light to enter the camera.

Shutter Speed

This is where you balance light capture with motion. For the aurora, you'll use a relatively long exposure. Start with 10-20 seconds. If the aurora is very faint, you might need to go longer (up to 25-30 seconds), but be aware that rapid movement can cause the aurora to appear streaky or blurred. If the aurora is very bright and active, you might need to shorten the exposure to 5-10 seconds to prevent overexposure.

ISO

The ISO setting determines the sensor's sensitivity to light. Since you're shooting in low light, you'll need to increase the ISO. Start with ISO 800 or 1600. If your images are still too dark after adjusting shutter speed, increase the ISO to 3200 or even 6400. Be mindful that higher ISO settings introduce digital noise (grain) into your images. Modern cameras handle high ISO better, so experiment to see what works best for your camera without sacrificing too much image quality.

White Balance

Auto White Balance (AWB) can be unreliable in low light and under the aurora's changing colors. For a natural look, try setting your white balance to Daylight (around 5500K) or manually set it to a custom Kelvin value between 3500K and 4500K. Shooting in RAW allows you to easily adjust this in post-processing.

Composition Tips

Beyond technical settings, composition is vital for a compelling aurora photograph:

• Include Foreground Interest: A striking landscape feature like a snow-covered tree, a mountain silhouette, a lake, or a cabin can add depth and scale to your image, grounding the celestial display.
• Look for Symmetry: Reflections of the aurora in calm water can create stunning symmetrical compositions.
• Consider the Direction of the Aurora: Sometimes the aurora appears to originate from a specific point or 'crown' in the sky. Composing around this can be effective.
• Don't Be Afraid to Experiment: Try different angles, perspectives, and foreground elements.

Post-Processing

Aurora photos almost always benefit from post-processing. Using software like Adobe Lightroom or Photoshop, you can:

• Adjust exposure and contrast.
• Enhance colors and saturation (carefully, to avoid an unnatural look).
• Reduce noise.
• Sharpen the image.
• Fine-tune white balance.

When and Where to See and Photograph the Aurora

Auroras are visible in high-latitude regions. The best times are during the darkest months (late August to early April in the Northern Hemisphere) and on nights with minimal light pollution. Check aurora forecast websites and apps for predicted activity levels.

By combining the right equipment, careful camera settings, and thoughtful composition, you can capture the magic of the polar lights and create breathtaking images that do justice to this incredible natural phenomenon.