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Topics - JakubCech

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16
[Max] Tutorials & Guides / HOW TO: Vector Displacement
« on: 2016-11-14, 10:52:39 »
I recently struggled with getting Vector Displacement maps working correctly in Corona so decided to create a how to topic on this. Steps:

1. Use high Max level value in displacement and then plug Vector Displacement map into Displacement slot.

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2. Plug RGB Tint into Vector Displacement node.


3. Here is the tricky part - Swap Green and Blue channels in RGB tint node. Plug Bitmap map with your displacement map into RGB Tint map slot.


4. Dont forget to load your displacement map with gamma override 1,0.


5. Result.


Used ear displacement map is atttached.

17
Lately I have been looking closer at Modo´s awesome meshfusion and stumbled upon rendering settings - where two Reinhard modes are present - Reinhard luminance (precisely according to paper) and Reinhard RGB. For both only burn value is available. After comparing I think Reinhard RGB is doing overally a lot more pleasant color distribution - color casts look much more natural IMO (picture 1 attached). Autodesk Vred, which is pretty awesome as well, has these colormappers, I rendered a car in EXR and made comparison in colormapping Vred(Luminance Reinhard), Vred(RGB Reinhard), Corona Highligh compression (with DeadClowns Fusion script https://forum.corona-renderer.com/index.php/topic,1807.0.html) and Arion FX Reinhard- (picture 2 attached). Arion FX Reinhard is the same as Reinhard Luminance. The most prominant difference is in blue cast on car (nicely white in Reinhard RGB) and on the ground color. In interior scenario its clearly visible how better RGB is. I attached rar with pictures for better comparison. Overally I think Reinhard RGB does better job in color cast color mapping and overall color distribution/light perception though have not found anymore about what it actually is. Corona has the best shadow / highlights distribution IMO. Maybe it RGB thing can get mapping to better level.

EDIT: Pictures of Corona mapping here are wrong - I did not use linear space in Fusion. Corona Color mapping is identical to Reinhard RGB.

18
[Max] Resolved Feature Requests / LUT VFB preview + curves
« on: 2014-08-26, 02:53:37 »
Hey guys,
I am using quite much LUTs in my workflow and these are many times reason why I switch back to the vray. I think it is important feature to have as well as curves - not everybody uses the same contrast pivot and tries to achieve result directly in VFB. These are my most wanted features. Keep up great work.

19
Gallery / 215 Sullivan
« on: 2014-03-05, 14:10:23 »
Commercial renderings for Watson&Company. It has been a great pleasure to collaborate with such great people. This was also the first time I created exterior renderings, please dont kill me fot the leaves!
Architect - Rawlings, Landscape architect - Hollander, Interior design - Eric Cohler.
Corona renderer.

Let me know what you think!
Jakub

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