theneuralbit / gphoto-timelapse

Utilities for capturing timelapse images with gphoto2

👋 Hi there! I'm Brian Hulette, some facts about me:

• TheNeuralBit is an anagram of my name.
• I like to make things, both digital and physical, and sometimes I write about them at theneuralbit.com.
• I'm currently a software engineer at Google, working on integrating BigQuery with open-source file and table formats (e.g. Parquet and Iceberg).
• I used to have other jobs:
  • Contributed to Apache Beam as part of the Google Cloud Dataflow team. Arrow + Beam (Beam Summit 2019), Simpler Python Pipelines (Beam Summit 2020)
  • Worked on data visualization and Apache Arrow JS for @ccri. Introduction to Apache Arrow Observable Notebook
  • Built Software Defined Radio applications for @n-ask.

gphoto-timelapse's Issues

Capture multiple images for HDR post-processing

Capture multiple images with different exposure compensations so we can do HDR post-processing.

From https://islandinthenet.com/hdr-photography-with-raspberry-pi-and-gphoto2/:

gphoto2 --set-config /main/imgsettings/iso=0 
              --set-config /main/settings/capturetarget=1 
              --set-config-value /main/capturesettings/exposurecompensation=0 
              --capture-image 
              --set-config-value /main/capturesettings/exposurecompensation=-2000 
              --capture-image 
              --set-config-value /main/capturesettings/exposurecompensation=-4000 
              --capture-image 
              --set-config-value /main/capturesettings/exposurecompensation=2000 
              --capture-image 
              --set-config-value /main/capturesettings/exposurecompensation=4000 
              --capture-image

Update camera f-stop based on shutter speed and ISO

If shutter speed is getting too long and/or ISO is getting too high, the aperture is too small, make it larger.

Similarly, if shutter speed is is too short and/or ISO is too low, the aperture is probably too large, make it smaller.