Beaked whales are among the least understood mammals on Earth. There are 24 known species, most of them rarely seen because they dive deeper and stay underwater longer than any other marine mammal. Many species have only been described from stranded carcasses, and new species continue to be identified, including one as recently as 2021.
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Want to shoot northern lights?
Your friends are posting their best Northern Lights pics on Facebook and Instagram, and you want to try it too. How can you get the best shot on a camera that isn’t a cell phone?
Capturing a strong photograph of the Northern Lights depends on using the right equipment, settings and technique, and on adapting to changing light and movement in the sky. A full-frame digital camera mounted on a tripod offers the best results because it can collect more light with lower noise during long exposures. Jessica Fridrich uses a Nikon Z7 for her aurora work.
“I must say that, until recently, I have always considered the Northern Lights to be a phenomenon that is only visible from polar regions. Last year, I realized that I had been missing out on a lot of fun.”
What settings does she use? She typically sets the white balance to 4000K and exposes for about six seconds at ISO 1600 to 4000 with an f/2.8 lens. These choices come from practical considerations: long exposures and relatively high ISO values allow the sensor to gather enough faint light from fast-changing auroral structures, while an aperture of f/2.8 lets in more light during each exposure.
Environmental conditions change the settings. When the Moon is out or when there is light pollution, the ISO should be reduced so the sky does not overexpose. If the aurora begins to move quickly, the exposure needs to be shortened to avoid motion blur in the structures. In that case, increasing the ISO compensates for the reduced exposure time; Fridrich shortens the exposure to four seconds or even two seconds when needed. Some auroral displays change shape rapidly, so adapting exposure length in real time is important.
Correct focus is essential. Autofocus is unreliable in darkness, so the camera must be switched to manual focus. The best way to achieve sharpness is to focus on a bright star. This ensures that both the sky and the auroral structures will appear crisp. Lenses with large apertures, meaning low f-stop values, work particularly well for night photography because they allow more light into the camera. Fridrich says she often uses a 24–70 mm f/2.8 lens, keeping it wide open. The zoom capability helps capture specific details within the display. For exceptionally large or bright auroras, especially those that stretch overhead, a wide-angle lens is preferred because it can capture the full extent of the scene.
Moisture is another practical concern. Dew often condenses on lenses during long sessions outdoors, so a simple lens cloth is important to keep the glass clear.
Phones can also record auroras. Using night mode is generally sufficient, as modern phones automatically lengthen exposure time and increase sensitivity in low light. For both cameras and phones, saving images in RAW or another uncompressed format provides more flexibility for later editing, though JPEGs are acceptable for those who do not plan to process their images.
Sites like Space Weather can help you find the right nights
The post Shooting Northern lights? Here are the best camera settings appeared first on Green Prophet.
