Bonzai3d | Render Options | Image

Owned by ben (Unlicensed)
Last updated: 04 Dec, 2013
3 min read

Image Tab

The options in this tab control the output image format, image tone mapping, and the creation of optional render channels.

 

General
  • Scale: Scales pixel dimensions of output image by the factor shown here. Useful for creating quick draft renderings at lower resolutions
  • Image Format: The image file format that the Maxwell render will be saved in. The image file format and bits-per-channel (BPC) are selected from the pull-down menus to the right. Not all BPC options are available to all image formats.
  • Color Space: Specifies the color space for the rendered image. Available color spaces include sRGB, Adobe RGB 1998, Apple RGB, NTSC, and many others. This parameter may be adjusted interactively in Maxwell while rendering.
Tonemapping
  • Burn: Parameter to control the highlights in a render. Lower burn values will decrease the intensity of the highlights to avoid “burned out” areas in the image. In most cases this parameter should be left at default. Lowering it too much may produce unnatural looking images. This parameter may be adjusted interactively in Maxwell while rendering.
  • Image Format: Maxwell Render internally uses a gamma of 2.2 to convert from spectral space to the RGB color space. This parameter is used to control the gamma conversion. Lower gamma values darken the image, while higher values lighten the image. Note that you can control this parameter interactively while rendering in Maxwell. This parameter may be adjusted interactively in Maxwell while rendering.
Channels

These options are used for advanced image compositing. Disabling all options except for ‘Render’ will result in faster renderings. See Channels.

 

  • Layer Channels: Enable Layer Channels

 

Layer Channels

Layer Channels allow creating additional output channels for each Bonzai3d layer. Clicking on the column for each layer will enable/disable the following channels:

  • Alpha Transp: Creates a new transparent alpha channel for the layer.
  • Alpha Opaque: Creates a new opaque alpha channel for the layer. Alpha Transp and Alpha Opaque are mutually exclusive.
  • Alpha Merge: Will consolidate all layers with a given alpha type (Transp or Opaque) into one channel.

Example: In the screen capture above, three new alpha image files will be produced when the Maxwell renders the scene:

  1. An opaque alpha for all visible objects on the Foreground Table layer
  2. A transparent alpha for all visible objects on the Middle Ground Table layer
  3. A second transparent alpha for all visible objects on the Background and Entourage layers
Illumination and Caustics
  • These options are used to accelerate renderings when specific optical phenomena are not required for your image. These controls allow you to deactivate certain aspects of the rendering calculations, such as Indirect Light or Reflected Caustics. These options are also useful in cases where you want to see the effect of just the indirect light in the scene, and for compositing purposes.