Opacity level and "checkerboard"

[kathyT]

Hello,
I have a simple question; when I have a layer that I want to lower the opacity on, why do I get the "checkerboard" on it as it lowers? Thank you for your help!

[Tina_B]

the checker pattern shows that it is transparent.

[TonyW]

And if there's nothing underneath to show then it shows it as being transparent. Put another (non transparent) layer underneath with 100% opacity and the checkerboard will disappear.

Tony