Blender 4.5 LTS: Rendering¶
Render Output¶
- Images written from the render output can now store meta-data for the pixel density, the aspect ratio into account making this useful for storing the aspect for non-square pixels. (af1110fb3c)
- Rendering with an alpha channel is now supported for the BMP format (80f30211c6)
- Video rendering to FFV1 codec now supports 10, 12, and 16 bits output. (PR#138192) (PR#138624)
Lights¶
New light controls¶
- Exposure, to multiply the light intensity by \(2^{\text{exposure}}\). This makes it easy to control a large range of intensities with a single slider. (#134528)
- Temperature, to pick a natural light color using blackbody emission. The temperature color is multiplied with the existing light color, for further control of the color tint. (#134303)
- Normalize, to disable normalization of the light intensity by area. By default, the total power of the light remains the same when the light size and shape changes. By disabling this option, total power will increasing when making the light bigger. (#136958)
USD and Hydra natively supported the same options, and they are now preserverd on import and export.
The unit (W) from light power is removed¶
This unit was in radiometric, but real world lights are typically specified in photometric units, which caused some confusion, hence the removal. (a47954fbf2)
Shading¶
Volume Coefficients¶
A new shader node to control volume coefficients (921c2b9d61).
Internally it is just a combination of existing Volume Scatter, Volume Absorption and Emission Shaders, with the input being coefficients instead of color. It is intended for modeling real-world volumes with measured data, obviating the need to combine multiple shaders and adjust both color and density.
