Render channels are used to composite an image out of various components such as: Raw diffuse color, depth, alpha, etc. This is mostly used when you intend to do post-processing using an external image editing program.



The drop-down lists the activate channels of the rendered image. Select a channel to display it in the darkroom window.



Presto engine:

  • Alpha
  • Ambient Occlusion
  • Depth
  • Direct
  • Global Illumination
  • Mask
  • Material ID
  • Normal
  • Normal (Denoise)
  • Object ID
  • Position
  • Raw Diffuse Color
  • Raw Diffuse Color (Denoising)
  • Raw Diffuse DL
  • Raw Diffuse GI
  • Reflection
  • Refraction
  • Subsurface Scattering (SSS)
  • Shadow
  • UV


Nitro engine:

  • Normal
  • Depth
  • Raw diffuse

Mask passes will only appear when you assign a mask to an object from the Object tab > Mask index.

In case you want to save an image along with the Alpha Channel, the Alpha Channel needs to be enabled before rendering the final image.

Depth Channel Range

  • Min/Max Z: the minimum/maximum distance along the camera's z-axis in meters


Depth Channel: Min=0, Max=10 Depth Channel: Min=0, Max=20

An example with different depth values. Left 0/10, right 0/20