The Photoshop Big Adjustment Layers Plugin is a great little plugin that brings back one of the features I miss from the early versions of Photoshop.

What Does Big Adjustment Layer Do
When creating an adjustment Layer Photoshop docks that adjustment layer into the Layers panel and usually its pretty small to see.

From a click of a button, The Big Adjustment plugin brings that adjustment layer into the Photoshop canvas with a much larger view. This is ideal especially when working with adjustment layers that may need some delicate adjustments such as Curves.

Compatible With:
Photoshop version 24.0 or newer
Mac OSX
Windows

Installation:
After downloading the file, unzip it to your desktop and then double click the enclosed ccx file and then follow the on-screen instructions.