One important thing to understand with computer monitors is that each panel is unique due to the manufacturing process. Especially with IPS panels and other new technologies, there may be inconsistencies in back-light and bright and dark spots. Most manufacturers will have a specific tolerance for these spots or back-light bleed as it is simply impossible to sell or guarantee these type of products against these sort of inconsistencies. To view Viewsonic's panel policy, please visit the link below:

Viewsonic Panel Policy

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