It happens more and more often during photographing various events that someone is disturbed by the clicking sound of a DSLR camera and people ask photographers to turn off the sound. The photographer often just blinks not finding the words to reply. Clicking sound is not just an effect with a DSLR camera just like with mobile phones and compact cameras. It is an integral part of the function. Many photographers however has no clue about even DSLR cameras can be silenced. More than that it is very much advised in certain situations. If it is not possible than even more routine and knowledge is required to avoid disturbing others. And no, simple because you “have to” take photos doesn’t allow you to disturb others.