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For screen display, a good choice is the "it" driver for sending images to it3 for display with RenderMan installed. This flexible viewer lets you easily scroll, zoom, adjust exposure, and review previous renders among other things.


Any number of attributes of this form can be passed, with any inline type (e.g. string, intint[2]float, float[4], etc.).

There is also the option for autocrop, which will reduce the data window to an area that bounds the non-zero alpha of the image. This can reduce the size and processing times of EXRs.


This driver produces an output file in Tagged Image File Format (TIFF). It can be used to store R, RGB, RGBA images in 8-, 16-, or floating point 32-bit-per-component resolutions. Alternately, it can store an arbitrary number of AOVs. The TIFF file created employs LZW compression; 8, 16, or 32 bits per sample; and a planar contiguous configuration.


This driver will launch the image tool ("it") image viewer if it is not already open and send the render to it.  This is a good choice for interactive use as it lets you see the image in progress as it renders, pan, zoom, adjust exposure or gamma, compare renders, take notes, and do other useful things. "It" also supports interactive IPR rendering when used from RfM, RfK, or another digital content creation application.