I’m using modeling with background images in 2.8.
To do that, I set the viewport to preset ortho view, then drag and drop image from the file browser onto the viewport, which is the same as adding it via Shift+A > Image > Background image / Reference image.
Then I add a mesh object, select it, enter Edit mode for it and start tracing an image.
However if at any point I need to see my image clearer (for example, making it more saturated / less saturated to see any certain places more clearly), what can I do to make that fast enough?
I know that I can exit Edit mode for the mesh object, select the image, go to the Properties editor > object data tab > empty > transparency to change the alpha value for the image, but that is extremely inefficient.
That was maybe one of the only useful things background images had in 2.7x - they were part of viewport (which was considered as downside for other reason) and so they weren’t an object which allowed user to open properties of viewport, set alpha value to something new and have the image become clearer or more dim, all in 1 or 2 clicks without leaving Edit mode of the mesh object being edited acording to that image.
For 2.8 - 2.9 however I didn’t find similar way, hence so far it looks like if background image itself is occluded with the mesh object geometry created according to the reference contained in that image, to move it quickly to the front or make it more saturated I only need to open that image either in separate Image editor in the Blender window or elsewhere other than Blender.
TL;DR So to summarize I wanted to know how to make background image in the viewport less / more saturated (what its Transparency value does) or bring it to front without leaving Edit mode of the mesh object being created according to that background image for faster editing.