Portraits & Photographs

[Joey Smiley]

No: HPFGUIDX 190364

Hello,

Was just reading a bit of OoTP during the weekend and thought of these things:

Portraits: 

Fat Lady, Sir Cadogan, Sirius's mom, Phineas Nigellus and all other Hogwarts headmasters are quite aware of what's happening around and live just via portraits. 

So, why didn't Harry ever consider getting a portrait of his parents or even Sirius? Nick said Sirius would have gone on and will not be back as a ghost. Is this applicable to portraits too? If yes, does that mean that DD has not gone on? 

Photographs: 

CoS: Harry is trying to move out of the frame in Lockhart's photograph

OoTP: Percy walks out of Mr Weasley's family photograph at his office

DH: DD looks dolefully at Harry and Hemione from his photograph in the Life and Lies of DD book 

Flitting in and out of a photograph is one but reflecting current emotions of the real-life counter part is another. Does this mean that photographs capture more than the picture and are "connected" to the real-life counterparts?

Are there any canon evidences that can answer my queries? Share them, please! :-)

Cheers,
~Joey :-)