this post was submitted on 27 Sep 2025
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Yeah this is generally how low light and HDR camera modes work - by taking multiple photos and then using a technique called "Stacking" to average out noise and improve signal (useful light).
You can also just take 20-30 second exposures if your phone has a "pro" camera mode, then do the rest of the stacking with other tools. The astro mode simply does everything for you, but you get less control over the processing.