User guide

358
Control (UI) Default Value Function
exrCompression Scanline ZIP Defines the exr compression method to use. All methods are
lossless (with the exception of Pixar24, which is lossless but
quantisizes the pixels to 24-bit float). Wavelet is generally
preferable as it offers ~2:1 compression even on grainy data.
exrBitDepth 16 Sets the floating point precision of the rendered exr file:
• 16 - half float. This is recommended for all color passes.
• 32 - full float. This is recommended for all ncf data arbitrary
output variables (AOVs).
exrOptimize Yes When enabled, the exr file is written out in an a manner
optimized for efficient random tile-access. These optimizations
greatly improve memory usage and performance for programs
which process images in tiles.
exrType Tiled Sets whether the exr file is written to support:
• Tiled - random tile access.
• Scanline - random scanline access.
clampOutput No When set to Yes, post-render clamp negative rgb values to 0,
and clamp alpha values to 0-1.
Note: clampOutout has no effect on NaN and inf values.
colorConvert Yes When set to Yes, post-render convert rendered image data
from linear to the output colorspace specified in the filename.
The default value of Yes is suitable for nearly every situation,
since the linear output of the render will be converted to the
colorspace in the filename. A case where you would want to set
this to No is if you know the data being rendered is in a
colorspace other than linear, such as the reprojection of a log
plate, and you want to name the output file log without a linear
to log conversion.
6 NODES R-Z | RENDEROUTPUTDEFINE