Discrepancy in rendering between Perspective and Orthographic Viewports

Perspective and Orthographic views render differently. Ortho views use a tonemapper with no gamma.

1. Launch: UE4Editor.exe
2. Create a new 2D SideScroller template project
3. Drag a MyCharacter Blueprint into the level
4. Compare the Perspective Viewport to the Orthographic Front Viewport

Results:
The Ortho view is slightly blown out as compared to the Perspective view.

Background color & exposure in editor doesn't match PIE