Sneak Peak "Dehaze" LR CC Feature

[digitaldog]

My experience over the past few days with a wide variety of images: portraits, still life, architecture, and a wide variety of lighting conditions - flat to contrasty -   tells me it is being applied globally, not only to low contrast areas.

It is apple globally, but the results are not, let's say, linear (the same strength throughout the image isn't the same).

[Jim MSP]

It is apple globally, but the results are not, let's say, linear (the same strength throughout the image isn't the same).

Thanks. I was guessing that for what I have used it for. But does a setting change from 20 to 40 (for example) double the strength all over? I am assuming that it does.

[digitaldog]

Thanks. I was guessing that for what I have used it for. But does a setting change from 20 to 40 (for example) double the strength all over? I am assuming that it does.

I'm assuming the same but I'd rather have solid proof, ideally from an Adobe engineer 

[digitaldog]

It was suggested elsewhere that this site is in some way related to Dehaze:

http://dl.acm.org/citation.cfm?id=1360671

[Arlen]

I agree that it would be nice if you could apply, or at least selectively remove, Dehaze in LR via local adjustments. However, something similar can be done using Dehaze as an ACR Filter in PS on a layer, and then masking away the effect where you don't want it. As a qualifier though, I found that the maximum strength of Dehaze as an ACR Filter is lower than what you see when using it directly in ACR, or in LR. (If the extra strength is needed, Dehaze could be applied in ACR/LR to a copy of the original file, and then that copy could be used as a masked layer in PS.)

I'm attaching some files that show the effect of Dehaze on an unremarkable image, except that its distant haze makes it a good test subject.

Image 1:  No Dehaze applied.

Image 2:  Dehaze of +100 applied as an ACR Filter in PS.

Image 3:  Same as 2, but the ACR Filter effect has been masked on a layer, and restricted by a gradient to the upper mountains area.

Image 4:  Dehaze of +100 applied in LR (or equivalently, directly in ACR, not as a filter), not masked.