ND Grad with Luminosity

Peter Gude

• February 10, 2021 16:32

When i create a local adjustment with ND filter linear top for example, i want to use lumen

When i use the lumen button it will affect the complete photo not only the part of the ND grad.

Is there a way around this ?

Thanks,

Peter

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  Brian Lawson Community moderator

  • February 10, 2021 16:50
  • Edited

  Can you show us a screenshot of what you are doing please? This is working correctly for me. I added the Local Adjustment and left it in it's default Darken setting then applied the Gradient and set the Blending Mode to Luminosity.

  

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  Peter Gude

  • February 10, 2021 17:05

  I used an example photo... 

  

  ND grad applied (dark buildings )

  

  Blending mode Luminosity (buildings still affected and rare blue sky) no change in the mask

   

  

  Hit the lumen button , sky and buildings are ok , but the lumen mask affects the whole picture not only the nd grad on the sky

   

   

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  Rick Sammartino Community moderator

  • February 10, 2021 18:21
  • Edited

  Blending modes happen behind the scenes. You won't see their effect in the mask. If you had a blue sky, then you could use a blending mode to select it, but your sky is not one color so blending modes won't be useful here.

   

  You can use more than one masking option at a time. You could mask out the city and drop a gradient on top of that. If you want to mix masks, it's easier to use AI or masking Brush first, then drop the masking bug onto it later.

  If you just want to affect the sky, Rather than a gradient, use AI mask to separate the sky. Since Local adjustments don't have access to AI, you'll need to create that mask in Effects and copy it to the Local Adjustment...

  

   

  You could also use the color range mask on the sky, adjust the slider to the best position, then use the masking brush to brush out the buildings below and tidy up the sky.

   

  

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  Rick Sammartino Community moderator

  • February 10, 2021 18:53
  • Edited

  This is the result of using the color range mask mentioned above after cleaning it up with the masking brush.

  

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  Peter Gude

  • February 10, 2021 19:11

  Rick/Brian,

  Perfect, thank you very much.

  the showed options will do it !

   

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  Brian Lawson Community moderator

  • February 10, 2021 19:51
  • Edited

  Peter, you've been confusing the Luminosity Blending Mode with the Luminosity Mask.

  The Luminosity Blending Mode is accessed under the gear widget in the Blending Mode drop-down menu. It protects against color shifts when tonal changes are made to your image.

  The Lumen button you've been clicking creates a Luminosity Mask which allows you to restrict your edits to specific brightness ranges. When you click that button it will create a new mask and overwrite any prior masking. If you want to combine a Luminosity Mask with a Gradient Mask create the Luminosity Mask first then you can drop the gradient on top of it.

  The same thing applies when you use the Color Range Mask. Any mask the program creates with an automated button push will overwrite whatever masking has already been done. If you want a gradient over a color range, again, do the color range first, then place the gradient over it.

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  Peter Gude

  • February 10, 2021 20:29

  Awesome Brian, Thanks!

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