Introduction This blog describes some hints to get a self hosted Keeweb working with a…
White balance underwater
A well known phenomenon to divers is the fact that water absorbs light, the red…
Window of opportunity
When taking wide angle photos underwater we observe a remarkable effect: if we look up…
Natural light photography underwater
Flash, Forrest, flash! Many starting photographers conclude there is not much light underwater and start…
Open Sesamy: Port-knocking using just one port
Port knocking is a mechanism to provide additional security to firewalling. Port knocking is normally used in firewalls.…