Use the View > Set Non Proportional View tool
to scale the view independently along the horizontal and vertical
axes in both orthographic and perspective windows. This can also
be thought of as changing the aspect ratio of the view.
This results in the model appearing squished or stretched, which may help reveal curvature problems.
You can use this tool in two different ways:
The behavior
of the tool depends on whether the Non proportional scaling
box option is checked on or off in the Viewing section
of Preferences > General Preferences ❒.
Non-proportionally scale the view interactively
You can also use the icon in the NavBar to
non-proportionally scale a view in the Perspective window.
Non-proportionally scale the view by drawing a box
When you release the mouse button, the window fills with the content of the box. This happens whether you drag right or left.
You can also use the icon in the Viewing
Panel or the NavBar to
non-proportionally scale a view in the Perspective window.
The use of the mouse buttons is the same.
Toggle between proportional and non-proportional views
Once
you have created a non-proportional view with View > Set Non Proportional View , you can use View > Toggle Non Proportional View
to switch
back and forth between your non-proportional and proportional view.
No other aspects of the camera view are changed when using this
tool.
When saving the file, both the proportional and non-proportional views are saved, and the toggle still operates properly after the file is re-opened. This is also the case when saving only the window layout with Layouts > User Windows > Save Current Layout and retrieving it with Layouts > User Windows > Retrieve Layout.