that all seems clear enough on the black/white/neutral, but just to fuzz it up a bit, these are the less exact results I reported before from an inadvertant late crop

The crop turned off, a cluster of colour control points on and by the sheep
http://www.worldphotographyforum.com...1&d=1196973341

The crop made, the cluster has dropped to the bottom, but the sheep area where they were still brightened as intended
http://www.worldphotographyforum.com...1&d=1196973421

with the crop turned on but the effect of the control points turned off, they are clustered down the bottom and the sheep pretty dark

http://www.worldphotographyforum.com...1&d=1196973113

If the crop is turned off, they spring back, but they are no longer alive for further editing as they should be, so still not a clever idea!