9

628 Chapter 20: Managing Scenes and Projects
the file. See Extra Channels and Attributes (page
3–624).
PIC Files
3ds Max can import and export Radiance Picture
(PIC) files. The PIC file is a lighting-analysis
format used for the same purpose as LogLUV TIFF
files (page 3–634). The PIC format differs from the
LogLUV TIFF format by creating separate files
for luminance (page 3–964) and illuminance (page
3–955) channel data (the LogLUV TIFF format
creates one file containing both channels).
One way to create PIC files is with the Lighting Data
Exporter utility (page 3–303).Youspecifyafile
namebyclickingtheFileNamebutton.Whenyou
click Export, the Lighting Data Exporter renders
two files. The string “_Illuminance” is appended
to the name of one file, and “_luminance” is
appended to the other. For exa mple, if you type
house as the file name, the expor ter renders to
house_illuminance.pic and house_luminance.pic.
You can also open and save high-dynamic-range
images in the PIC format using the Radiance
Image File format in input and output file browsers
in 3ds Max. For further information, see HDRI
Files (page 3–613).
See also
Radiosity Workflows (page 3–57)
PNG Files
PNG (Portable Network Graphics) is a st i ll-im age
file format developed for use w ith the Internet and
Worl d Wi de Web.
Interfa ce
Clicking Render or Setup in the Render Output File
dialog (page 3–9) displays the PNG Configuration
dialog.
Optimi zed p al ette ( 25 6) —Choose to render a
smaller, 8-bit color file.
RGB 24 bit (16.7 M illion)—Choose to render a true
color (24-bit) file.
RGB 48 bit (281 Trillion)—Choose to render a 48-bit
color file.
Grayscale 8 bit (256)—Choose to render a grayscale
image w ith 256 shades.