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+--- Thread: Gradient used to mimic neutral density filter along horizon (/Thread-Gradient-used-to-mimic-neutral-density-filter-along-horizon)
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RE: Gradient used to mimic neutral density filter along horizon - gstalnaker - 12-29-2018
(12-28-2018, 07:04 AM)Ofnuts Wrote: Looking at your picture, i think the right way to do it is to use luminosity mask.
Thanks ofnuts -- while such a masking technique may be useful for this particular image, what I was after was a technique that allowed me to use the regular gradient tool.
I suspect, given that neither you nor rich2005 know of such a thing and given your combined expertise in GIMP, that this is not an easy thing to do.
RE: Gradient used to mimic neutral density filter along horizon - Ofnuts - 12-30-2018
Actually I made a post with that technique, but deleted it because I thought it was too complicated. Now restored as post #3 in this thread.
But the easiest technique IMHO is to use a blur, whic is the equivalent of a linear gradient. If you want to change that gradient, remember that you can apply Levels or Curves to the mask.
RE: Gradient used to mimic neutral density filter along horizon - gstalnaker - 12-31-2018
ofnuts - thanks again - I think you and rich2005 have both provided a very similar approach. Am digesting what they mean and steps to duplicate.