Added note about camera

Author: britzl

docs/en/manuals/adapting-graphics-to-screen-size.md

@@ -51,6 +51,12 @@ This will give the following result:
 
 ![](images/screen_size/retro-zoomed_1280x800.png)
 
+::: sidenote
+The same result can be achieved by attaching a [Camera component](manuals/camera/) to a game object and check *Orthographic Projection* and set *Orthographic Zoom* to 4.0:
+
+![](images/screen_size/retro-camera_zoom.png)
+:::
+
 This is better. The window and graphics both have a good size, but if we look closer there is an obvious problem:
 
 ![](images/screen_size/retro-zoomed_linear.png)