Sony Bravia 46" V5100 auto-dim problem

[Rike255]

Hey everyone,

So I bought my new Sony Bravia a month back or so and been living with this annoying issue where anytime the content on the screen becomes dark (or there isn't much) the TV automatically dims.

This is REALLY annoying in dark scenes of movies or even during the credits where everything goes dark, then suddenly something bright pops up and it un-dims the screen.

I can't seem to find any settings for turning this off, does anyone know how?

Thanks in advance