Sunday, July 28, 2024

Multiple Materials in One Object in Blender

 Must be in edit mode then select the parts.

Then choose the material required, then assign.



Letting Light Through Glass in Blender

 



Animating Lights in Blender

 




https://docs.blender.org/manual/en/latest/render/lights/light_object.html

To save you from doing the conversion, here is a table of typical power values for point, spot, and area lights:

Real world light

Power

Suggested Light Type

Candle

0.05 W

Point

800 lm LED bulb

2.1 W

Point

1000 lm light bulb

2.9 W

Point

1500 lm PAR38 floodlight

4 W

Area, Disk

2500 lm fluorescent tube

4.5 W

Area, Rectangle

5000 lm car headlight

22 W

Spot, size 125 degrees

And a table of typical Strength values for sun lights:

Sun type

Strength

Clear sky

1000 W/m2

Cloudy sky

500 W/m2

Overcast sky

200 W/m2

Moonlight

0.001 W/m2

These values will likely produce much brighter or dimmer lights than you would expect, because our eyes adapt while a render engine does not. So to compensate, adjust the Exposure in Render ‣ Film.

To get realistic results, remember to also set the light size and color to realistic values. The color of your lights will also influence how bright they appear to the human visual system. If you leave the power unchanged, a green light will seem the brightest, red darker and blue the darkest. Thus you might want to manually compensate for these perceived differences.

Friday, July 26, 2024

Exporting 3D models to Davinci Resolve

 

Davinci can import Olympique 3D animation file.

Wednesday, July 24, 2024

Exporting Davinci Resolve to Blender

 Instead of just a static HDR 360 degree panoramic picture background, we can insert Blender 3D images into videos from Davinci Resolve.



Exporting Blender to Davinci Resolve

The video editor in Blender is very basic. Davinci Resolve is a professional quality video editor that can output to the latest video formats and can even upload to YouTube conveniently.



Simplest way is to use VFXIO, Linear to Gamma 2.
He uses up to 2 LUTs using Filmic versions of LUTs available at GitHub.

open EXR, DWAA format



He recommends open EXR. For LUT,  for default Blender viewport can use Linear to sRGB or Rec709. Rec 709 is still dark. But he uses Aria Log C which is not as bright as sRgb.