In Maya-2015 it is "New" under Panels -> Perspective
I don't know about previous versions but in Maya 2015 adjust your perspective view (or any view), then go to Panels -> Perspective -> New. New camera is added.
gamedrills blogspot
Last edited by RajneeshG; 18-01-2015 at 11:04 AM.
Reason: added link to my blogspot.