Re: [Gimp-user] ufraw -- exposure vs base curve

["Rick Strong" <rnstrong primus ca>]

Hi Gary,

If you are talking about photographs, altering the curve is not the same as 
boosting the exposure.

Generally speaking, boosting the exposure makes the whole picture brighter, 
while playing with the curve alters areas--shadows, mid-range, 
highlights--of the photograph. But, you may play around with one to end up 
with a result very similar to the other. This is best done in raw.

Rick S.

-----Original Message----- 
From: Gary Aitken
Sent: Wednesday, March 14, 2018 1:45 AM
To: gimp-user-list gnome org
Subject: [Gimp-user] ufraw -- exposure vs base curve

Hi Folks,

Not sure where to ask this as I couldn't find a ufraw forum, but I
figured a number of users here might be able to answer.  Please
redirect me if this is inappropriate.

Can anyone explain to me the difference between manipulating the
base curve in ufraw and boosting the exposure?  I'm wondering in
terms of where in the processing pipeline the change takes place.
i.e. If I could manipulate the base curve to make the image look
exactly the same (to my eye, I know it's not perfect) as boosting
the exposure, is there fundamentally a difference in the result?

Thanks,

Gary
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