When I was using only Camera Raw within Photoshop CS6 there was a hotkey available (Ctrl+Z) which allowed to cycle between current version of the settings and the previous one. It was a quick and easy way to preview the effect of the last adjustment. I used it a lot. Now when I've switched to Lightroom there is a hotkey (\) for comparing the photo with the point when it was unedited (which is not what I'm looking for) and there are also 3 other options:
- clicking between two last history states back and forth,
- copying the settings of the "now" to the "before",
- press Ctrl+Z and Ctrl+Y back and forth
but none of these options is as quick and easy as the old one, so my question is: is there an easy way to mimic the Ctrl+Z hotkey from Camera Raw?