osx only, sorry, run
brew upgrade gphoto2
set camera mode to RAW and small BASIC and run
~/photobooth/binary/gphoto2 --auto-detect
~/photobooth/binary/gphoto2 --set-config capturetarget=1
start webserver
sudo php -S 0.0.0.0:80 -t ~/photobooth/Server
copy this app to ~/photobooth
point your browser to http://localhost
move around with cursor keys & shoot with spacebar
click picture icons for full screen, starring, deleting ...
i edit with https://viliusle.github.io/miniPaint