Lightroom/Camera Raw: Grain tool modified so as not to effect contrast

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  • Updated 7 years ago
  • (Edited)
I'm amazed at the way the Grain algorithm works, but when any grain is applied it lowers contrast. Highlights get dark dots and therefore gain density. Shadows get white dots added to them and therefore get lighter. The overall effect is lower contrast. When I add noise in Photoshop I add a contrast curve to put the overall contrast back in place. With the grain tool in LR I'll increase both Blacks and Contrast sliders when increasing grain to compensate. While necessary for good looking prints, this adds complication to the overall workflow that might also involve using the image in other ways - like for the web without grain for example.

My idea here is: "What if the grain tool worked in such a way that it automatically compensated for this contrast adjustment?" or "What if the grain algorithm added contrast with grain?"
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Scott Martin

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Posted 7 years ago

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Rob Cole

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A very interesting idea indeed.

In the mean time, consider using virtual copies when you have more than one use scenario for an image. Granted "copy management / group handling" issues kick in if you use virtual copies and stacking for too many different things, but this FR/Idea would solve that problem:

A new way to handle related groups of photos

Also, relative presets can be used for increasing blacks and contrast along with grain. Adobe is considering this feature for future (Lr4?), but if you can't wait, there's DevAdjust now.
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Scott Martin

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RIght, I prefer using snapshots over virtual copies for that kind of thing, to keep things nice and tidy. Relative presets I like the sound of for sure.
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Rob Cole

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