I want everybody to list all the situations/scenes in which no flash is allowed and the way to take photos in those situations/scenes?
As far as i known,
* Night Safari (low light)
solution: Large aperture (depends on DoF), high ISO setting or using a IR flash to take IR photos
* Some museums (usually low light)
solution: Large aperture (depends on DoF), high ISO setting (I do not know whether IR flash is allowed or not)
It seems that high ISO setting is the ultimate solution if the noise level can be better controlled.
any more situations?