jm_almostPhysicalSunAndSky v3.3

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Contributor: Johannes Møgelvang
Generates an adjustable and animatable sun and sky background plate. Inspired by the physical sky implementation in 3D renders like Arnold
14.0, 13.2, 13.1, 13.0, 12.2 or later
Linux, Mac, Windows
08 Mar 2024

The gizmo outputs a sun and sky background plate or each element isolated. It can also output a spherical 3D scene or a 3D light

There are built in controls for sun and sky control, simple color correcting and perspective adjustments for quick and easy use.

There are optional inputs for an external camera and an external sun (or moon).


jm almostPhysicalSunAndSky v002


jm almostPhysicalSunAndSky v002 UI


It is unfortunately not an implementation of the Hosek-Wilkie sky radiance model as it is beyond skills to implement that, but it is made to look like the physical sky implementation in Arnold using ACES. 



The gizmo requires some footage (included in the .zip). It can either be pointed to directly in the gizmo UI, or the flowing lines can be added to (remember to replace ......your.path....... with the correct path)

gizmoSupport = '/......your.path......./Gizmos/gizmoSupport'


Tested back to Nuke 12.2 on windows.

Updated to support Nuke 12 and earlier 3D system nodes


It seems the download is impossible to complete from nukepedia, so the gizmo and source can be downloaded from this link instead:



Please login in order to download these files.


+2 # etrama riazel 2024-02-01 14:56
v003 zip file is corrupted
0 # Johannes Møgelvang 2024-02-06 09:16
Please try the new version. I tested the download and this one should be able to complete.
0 # Johannes Møgelvang 2024-02-06 11:37
Hm no, I get download errors...
+1 # Johannes Møgelvang 2024-03-08 12:09
Apparently the downloaded files keep being corrupted.
I have added an external download link, use that instead.
0 # Javier Delgado 2024-03-09 15:32
edge detects a virus in the file
0 # Johannes Møgelvang 2024-03-12 13:29
Hi Javier
I have tried to download the file from the proton link with edge on 3 different unrelated win 10 PC's and one win 11. I have tried running windows defender and a 3rd party virus software, but I have found nothing.
What is it your edge browser detects?

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