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LAB mode
#1
Hi Folks,
Although I moved to GIMP several years ago, I still keep tabs on Photoshop developments.
Just watched a vid ( https://petapixel.com/2017/09/14/using-l...ch-images/ ) from the Petapixel site, and was impressed with the results shown!
I opened up gimp 2.9.6 (Thanks, Partha!), but LAB mode was nowhere to be found B>(
Am I missing something, or is this feature to be found in a future release? . . .

Thanks, Barry
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#2
welcome to gimp-forum.net

Might be in the color-corrected-experimental which is still GIMP-2.9.5-cce-64bit.exe

Best ask on https://discuss.pixls.us/ Partha does visit there.
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#3
(09-14-2017, 05:04 PM)rich2005 Wrote: welcome to gimp-forum.net

Might be in the color-corrected-experimental which is still GIMP-2.9.5-cce-64bit.exe

Best ask on https://discuss.pixls.us/ Partha does visit there.

I had installed Partha's 2.9.5, but uninstalled it when installing his recent 2.9.6. I suspect that if it was in 2.9.5, it wouldn't have been taken out in .6. I have emailed him for his comments on this post, so I'll post his reply when received . . .B>)
Thanks for the quick reply!

Barry (aka Gimpr)

(09-14-2017, 05:18 PM)Gimpr Wrote:
(09-14-2017, 05:04 PM)rich2005 Wrote: welcome to gimp-forum.net

Might be in the color-corrected-experimental which is still GIMP-2.9.5-cce-64bit.exe

Best ask on https://discuss.pixls.us/ Partha does visit there.

I had installed Partha's 2.9.5, but uninstalled it when installing his recent 2.9.6. I suspect that if it was in 2.9.5, it wouldn't have been taken out in .6. I have emailed him for his comments on this post, so I'll post his reply when received . . .B>)
Thanks for the quick reply!

Barry (aka Gimpr)

BTW, I reply faster than I think! I did not install the color-corrected version, perhaps that is necessary!
Barry
Reply
#4
(09-14-2017, 05:18 PM)Gimpr Wrote:
(09-14-2017, 05:04 PM)rich2005 Wrote: welcome to gimp-forum.net

Might be in the color-corrected-experimental which is still GIMP-2.9.5-cce-64bit.exe

Best ask on https://discuss.pixls.us/ Partha does visit there.

I had installed Partha's 2.9.5, but uninstalled it when installing his recent 2.9.6. I suspect that if it was in 2.9.5, it wouldn't have been taken out in .6. I have emailed him for his comments on this post, so I'll post his reply when received . . .B>)
Thanks for the quick reply!

Barry (aka Gimpr)

(09-14-2017, 05:18 PM)Gimpr Wrote:
(09-14-2017, 05:04 PM)rich2005 Wrote: welcome to gimp-forum.net

Might be in the color-corrected-experimental which is still GIMP-2.9.5-cce-64bit.exe

Best ask on https://discuss.pixls.us/ Partha does visit there.

I had installed Partha's 2.9.5, but uninstalled it when installing his recent 2.9.6. I suspect that if it was in 2.9.5, it wouldn't have been taken out in .6. I have emailed him for his comments on this post, so I'll post his reply when received . . .B>)
Thanks for the quick reply!

Barry (aka Gimpr)

BTW, I reply faster than I think! I did not install the color-corrected version, perhaps that is necessary!
Barry

Heard back from Partha, who agreed that Gimp had no LAB mode and suggested I try Decomposing to reach a LAB option for similar control - will try it out . .
Thanks to all,
Barry
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#5
Finally got around to viewing (almost-all) the video. Hate those PS ones, never know WTH is going on.

While regular Gimp does not have a dedicated LAB mode, the (rough) work flow can be paralleled using a couple of utilities.

G'mic plug-in http://www.gmic.eu does allow adjustment in LAB for color curves
a and b curves: https://i.imgur.com/RZWOiD6.jpg

and for the sky as well, the L curve: https://i.imgur.com/mKdoB5o.jpg

But that needs to be masked and the luminosity masks script can be used. see: https://patdavid.net/2013/11/getting-aro...masks.html

A before/after: https://i.imgur.com/SDcLyOg.jpg
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#6
(09-15-2017, 08:39 AM)rich2005 Wrote: Finally got around to viewing (almost-all) the video. Hate those PS ones, never know WTH is going on.

While regular Gimp does not have a dedicated LAB mode, the (rough) work flow can be paralleled using a couple of utilities.

G'mic plug-in http://www.gmic.eu does allow adjustment in LAB for color curves
a and b curves: https://i.imgur.com/RZWOiD6.jpg

and for the sky as well, the L curve: https://i.imgur.com/mKdoB5o.jpg

But that needs to be masked and the luminosity masks script can be used. see: https://patdavid.net/2013/11/getting-aro...masks.html

A before/after: https://i.imgur.com/SDcLyOg.jpg

Thanks for the leads, Rich! The G'MIC link is particularly interesting, those folks update so often that it is hard to keep up! . . .
Barry
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