Hiya I understand that "backlight compensation" is useful if you are taking footage of a subject in front of a very bright background. In this case, your subject may be too dull. Using backlight compensation brightens it up (but it also brightens up the background too) As far as I understand, manual gain up increases the signal and hence brightens the whole scene too. Doesn't this therefore give you the same effect as backlight compensation?, ie everything is brightened up, including your subject. It seems that gain up increases noise. Is this the only difference between the two features? Are there any disadvantages to backlight compensation? Thanks.