Are cameras allowed inside India/foreign airports and inside planes

[jason]

Hi,
Just wanted to know if I can take a camera and take photographs inside Indian airports and Inside the plane too.
Will it be permitted?. (CST airport in India and Singapore Airlines Flight).
Also is it allowed abroad too?
I see many photos of travellers who take pics abroad inside the plane and airport.
So just wanted to know.
Thankyou

[immihelp]

You can't get any pictures at the Indian airports.

It is allowed in US.