Re: Cinque Terre: Techniques
Since a histogram doesn’t know what the picture is about, it can’t offer an opinion on how much contrast or saturation is appropriate. A photograph of the city of Venice would have a histogram similar to one of the fake scenes of the Venetian Hotel in Las Vegas, but these two scenes would need to be handled differently.
A histogram-related possibility that might actually be useful, although I don’t particularly endorse it:
Suppose you have a version of the village in Cinque Terre, and you wish to know whether you should try to add more pop to it.
1) Add a duplicate layer
2) Make a two-second, sweeping lasso selection of the interior of the village.
3) Image: Adjustments>Equalize
4) In the ensuing dialog, choose Equalize entire image based on selected area
5) Reduce layer opacity, remembering that this is only for investigation and no great precision is needed.
The ancient Equalize command was originally known as Equalize Histogram. That’s what it does: it spreads out the histogram in the selected area, which can be the equivalent of adding contrast to it.
This layer is almost certainly useless and should be discarded, but it may give you a hint that you should be trying harder.