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areohbee
Legend
June 3, 2011
Released

P: Highlight *Detail* Recovery

  • June 3, 2011
  • 17 replies
  • 717 views

First I'd like to say how totally stoked I am that Highlight Recovery is working so much better than it used to - thank you, thank you, thank you...

Second, the recovered highlights still lack detail and are flat - the recovered highlight tones tend to be compressed. If I have the time, I often use local adjustment to lower exposure a smidge and contrast a lot to bring out more detail in the highlights, instead of recovery. (Note: clarity only works in the mid-tones).

Fill Light is magical - brings out detail in shadows in a very natural and beautiful way. Highlight recovery however - not so much.

So, this FR/Idea is to bring out more intra-highlight detail when doing recovery.

It is my understanding that Fill & Recovery both use masking to keep from compressing midtones while expanding darks & lights respectively. As of Lr3, this works *very* well. I'd just like to see some contrast reduction applied in the masked highlights to bring out tonal detail in the highlights. This is essentially what I do now manually using locals, but its painstaking. As long as the mask is already active to isolate the highlights, why not use it to spread out those highlight tones?

Bonus Idea: Allow additional adjustments to be applied by user to both shadow masked and highlight masked regions, so user could manually control not only contrast, but hue and such stuff...

PS - If you like this idea, don't forget to click the '+1' button below.

17 replies

MadManChan2000
Adobe Employee
Adobe Employee
January 18, 2012
Yes, this was implemented with many of the comments in this thread in mind.
areohbee
areohbeeAuthor
Legend
January 17, 2012
As far as I'm concerned, this can be marked "Implemented".
areohbee
areohbeeAuthor
Legend
January 17, 2012
Yep - nicely solved - big thanks to Adobe!...
dorin_nicolaescu
Inspiring
January 17, 2012
I guess this can be considered solved now with PV 2012...?
Inspiring
December 25, 2011
Fill light should have negative. I would like to keep the current highlight recovery.
areohbee
areohbeeAuthor
Legend
June 5, 2011
"proper" exposure settings are not a panacea. Sometimes the shadows are important too, so the issue remains even if the photo is "perfectly" exposed (meaning a perfect balance has been struck when its impossible to cover the entire dynamic range). One can sometimes resort to HDR techniques in this case, but that only works well if there is no subject movement between successive shots.
Inspiring
June 5, 2011
Andrew, it is true that nothing can reliably bring back the information the camera would have recorded with proper exposure settings.

But it is possible to replace blown highlights with something that blends in with the context. For example, deleting the blown areas with content-aware fill, would be one option. My proposed "Heal Mode for Highlight Recovery" is supposed to do something "magic" along this lines.
TheDigitalDog
Inspiring
June 4, 2011
IF you actually blow out all the highlights, there’s nothing to gain back, no magic algorithm will do this. So yes ETTR correctly (expose for highlights you wish to retain).

That said, ACR and LR have used a technique whereby if one of the three channels is fully blown out, some recovery can be produced from the other two channels. It may even be possible if two channels are gone, not sure. In the past, the recovery produced some very ugly results when pushed too hard. An example can be seen here, the differences are recovery in LR versus Raw Developer:

http://digitaldog.net/files/RD.jpg

I do believe much of this has been fixed (and the guy at Adobe who did it knows who he is, deserves a big pat on the back and our thanks). I do believe, after revisiting the image shown above from LR, that indeed, as Rob pointed out, there are improvements. But nothing is going to rebuild data that doesn’t exist because all channels are blown out. Having recovery behave better (more like Raw Developer) is welcome, it shows that some recovery is possible.
Author “Color Management for Photographers" & "Photoshop CC Color Management/pluralsight"
Inspiring
June 4, 2011
Hi Rob,

thanks for the inspiration.

I just posted a "Heal Mode for Highlight Recovery" feature request.
areohbee
areohbeeAuthor
Legend
June 4, 2011
TK said: "I feel highlight recovery should have a "healing brush" aspect to it. It should try to use information from the context to replace blown areas with ones that blend in nicely."

In this FR/Idea I was mostly just thinking about enhancing highlight detail when all 3 channels are not clipped (your function #1 above). I probably should not have even tied it to recovery proper, although they are highly related.

Your idea above is so good that it is crying out for an entirely new FR/Idea - why don't you do that so I don't have to ;-}

Honestly, I was just thinking about this recently and was gonna make the FR/Idea but forgot.

How about for a title: "Recovery of Blown Out Highlights: Why not Improvise?...", or maybe:
"Highlights Blown Out? - How to create something out of nothing..."...