9 of 10 people found the following review helpful
Does what it says in the tin,
This review is from: Oppo SPEARSMUNSIL Spears \& Munsil Blu-ray Picture Quality Calibration (Electronics)
Easy to use and will improve your picture noticablly
I have used other calibration discs bought on amazon.
They arent a patch on this. This is very professional with a blue filter included.
All you need is 20-30 mins max.