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markl78029787
Known Participant
February 5, 2022
Question

changing the depth information in Photoshop render file_

  • February 5, 2022
  • 2 replies
  • 4412 views

changing the depth information in Photoshop render file_ How do you apply the changes and what is the purpose of the Depth Map info in the Photoshop Dimension render file?

 

I understand the grayscale depth map controls I think the Depth of Field when the file is rendered, but how can I change it in the Photoshop file and reapply the new info? ty

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2 replies

Ussnorway7605025
Ussnorway7605025
Legend
February 6, 2022

your image is a layer from Photoshop and back in the past you could edit it to re-rendor your image [in Photoshop] but Adobe has dropped 3D from Photoshop now so its use there is limited

 

Dimension allows maps for Opacity, Roughness, normals, Metallic & Glow [material only] so (without hacking} you can't reenter the map back into Dimension in order to re-rendor the file

 

I don't use or have Stagger installed

@Ares Hovhannesyan or @davescm may know of a workaround but can I ask why you want to edit this map i.e, what are you hoping to achieve?

 

p.s, @Colin Holgate does Sketchup have an option to read a depth map?

    Ares Hovhannesyan
    Community Expert
    Ares HovhannesyanCommunity Expert
    Community Expert
    February 6, 2022

    The value of the  gray in Depth Map Layer in Ps file depend on 3d position of your object in perspective that mention the distance value between 3d object. If you will change their position you will be able to change Dept Map layer in rendered file in Ps

    Ussnorway7605025
    Ussnorway7605025
    Legend
    February 5, 2022

    there are two types of depth infomation in a 3D scene and you are asking a bit about each so I think we need to clear things up:

    depth information is normally call depth of field and that is a camera control that adds lens blur around a focus point... you can play with this in Dimension by moving the slider tool but be aware that blur has to rendored first before the effect is seen correct

    example of depth of field

    https://community.adobe.com/t5/dimension-discussions/depth-of-field/td-p/10438486

     

    the other kind of depth information [and the one with gray scale] is called a depth map and is old school normal map that you only see in old copies of Photoshop... most moden software now uses normal maps and Dimension will read a depth map as a normal map if you insert it but the effect will be back to front because depth maps are older

     

    how to use a depth map in Photoshop

      M
      markl78029787Author
      Known Participant
      February 6, 2022

      Thanks for gettig back to me...

       

      I want to know how I can utilize/modify the Depth Map Layer in a Adobe Dimension/Stager render file that is part of the Photoshop file from these programs.

       

      How can I modify the grayscale values and then reassign them to the output on the main 'render' layer..thanks

      davescm
      Community Expert
      davescmCommunity Expert
      Community Expert
      February 7, 2022

      Thanks Dr D!

      Would please specify the steps involved to "As an example it could be used with a lens blur filter to control the apparent depth of field. "

       

      I think I understand I could make a selection within the Depth Map layer, apply let's say Lens Blur, but how do you re-render to have it update the orginal render?

      ty


      You don't re-render.

      There are distinct stages of working in 3D :

       

      1. Modelling

      2. UV Unwrapping i.e. opening up the surface so it lies flat ready for texturing

      3. Texturing i.e. adding materials that will be used in rendering

      4. Lighting

      5. Rendering - this is where we use the shaders and output an RGB image file along with other files such as the depth map

      6. Compositing and finishing. This is where we can combine the rendered file with other images, or work further on it using masks and filters adjustment layers etc. At this stage, the depth map can be converted to a channel and used to control a lens blur filter, but all of this stage happens in 2D on the rendered image(s) from step 5. There is no further rendering needed during this stage.

       

       

      Dave

       

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