No. It is not. As has been repeated several times in this thread, all it does is show that your brightness and contrast are OK. Not great... not correct..just OK.
All photographers need to buy a monitor calibration device and use it, regularly.
"It is one thing to make a picture of what a person looks like, it is another thing to make a portrait of who they are" - Paul Caponigro
Constructive Critique of my photographs is always appreciated
Nikon, etc! RICK My Photography