HD Question

[TheHitMan-1973]

I have a new Sony KDL-42W706 and and i have notice the HD is very grainy when i look close up on screen , is this normal ? or can this be sorted in my T.V settings

 

[TheHitMan-1973]

What is the source material?

Sky HD & Blu Ray , i know blu ray films are grainy
Must be options in my T.V setting to improve this