Features:
1. U can create a NEW Camera at ur Current PerspectiveView.
By this, u wont hav to Lock ur PerspCamera which normally many of us do ;)
2. U can LOCK Trasnforms of this New Camera.
3. U can also add this new Camera into a :
(i). New Layer
-It has options:
a). Change DisplayType to Normal/Reference/Template.
b). Toggle Visibility of this new layer.
(ii). Existing Layer
U can select any of the existing layers from the scene by using the drop-down