How Exposure Impacts Nighttime Photography
To prepare yourself for Aurora photography, it is critical that you become familiar with how your camera works in the dark under various low light conditions.
Well before you depart for your aurora adventure, take your camera out into the darkness of the nighttime and experiment photographing in a variety of low light situations.
In the examples below, you will see how exposure will impact nighttime photography. The environment consisted of almost complete darkness, with only the dim glow of a light inside the tent and the glow of a full moon hiding behind the cloud cover. By only changing the exposure time, and keeping all other factors the same, you can see how exposure time will create a photograph in the darkness that ranges from a very bright photo with lots of background exposure to a darker photo that creates a dark outline of the treeline in the background.
30 Second Exposure
Aperture: 2.8
ISO: 800
Focus: Infinity
Camera Setting: Manual
Tripod Used
Camera: EOS Canon Rebel T6i
Lens: Tokina Wide Angle
Light Conditions: Darkness with a light glow from the tent and a full moon behind the clouds.
8 Second Exposure
Aperture: 2.8
ISO: 800
Focus: Infinity
Camera Setting: Manual
Tripod Used
Camera: EOS Canon Rebel T6i
Lens: Tokina Wide Angle
Light Conditions: Darkness with a light glow from the tent and a full moon behind the clouds.
2 Second Exposure
Aperture: 2.8
ISO: 800
Focus: Infinity
Camera Setting: Manual
Tripod Used
Camera: EOS Canon Rebel T6i
Lens: Tokina Wide Angle
Light Conditions: Darkness with a light glow from the tent and a full moon behind the clouds.
TRY IT YOURSELF!
- Find a low light setting
- Set your camera to manual
- select 800 ISO
- Fully open your aperture with your focus on infinity
Every camera responds a little different. I only suggest these settings as a starting point to experiment with exposure.
NEXT...
Once you are set up in the field, take three pictures starting at a 30 second exposure, then an 8 second exposure and finally a 2 second exposure. Examine your photos and note how the shorter the exposure time, the more darkness appeasers in your subject matter. Now think a little about how you will want your aurora photo to appear. Do you want a blueish colour sky with a clear view of background images such as trees? If so, then you will want to have a longer exposure time. Or do you want a darker sky that allows the aurora to pop out more with background images a little darker? Then you may want to go with a shorter exposure. ISO and Aperture also impacts the brightness of your nighttime photography but let’s become comfortable with exposure time before we look at those other factors. The time you spend experimenting with nighttime photography in advance of your aurora experience will greatly benefit the wonderful results you will capture with your camera once under the aurora.
For more tips on nighttime photography, following this link below: https://www.roughguides.com/article/night-time-photography-10-tips-for-photographing-after-dark/
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