For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download Screenshot Creator for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Screenshot Creator v1.4.5.3
Screenshot Creator is a tool for creating screenshots at any resolution, even super HD, within the Unity Editor.
Features:
o Quickly create good high quality screenshots
or wallpapers.
o Take multiple screenshots at multiple
resolutions with a single click
o Multiple image overlays
o Take screenshots using any camera at all, even
the Scene View (great for collaboration
and information sharing).
o Scaling of screenshot resolution (for external
resizing) allowing for more detailed renders.
o Real-time preview and following of the scene
camera allowing you to perfectly & precisely
place your cameras for screenshots.
Please note: There is currently a known bug within Unity itself preventing non-world-space UI items from being captured. See This Forum Post for more information. Once Unity’s Developers fix this bug UI elements should be captured correctly.
