Below are the defaults for Channels and Displays

channel filter string ["box"] Reconstruction filter or rule: "min", "max", "average", "zmin", "zmax", "sum", "gaussian", "box", "triangle", "catmull-rom", "separable-catmull-rom", "mitchell", "blackman-harris", "sinc", "bessel", "disk", "lanczos"
channel filterwidth float[2] [1 1] Description
channel relativepixelvariance float [0] Description
channel remap float[3] [0 0 0] Description
channel source string [] Description
channel statistics string ["none"] Description "none", "variance", "mse", "even", "odd"
display ActiveBuckets integer [] Description
display BucketOrder integer [] Description
display BucketSize integer[2] [] Description
display camera string [] Description
display ChannelCount integer [] Description
display ChannelNames string [] Description
display CheckpointElapsedTime float [] Description
display CheckpointIncrement integer [] Description
display CheckpointKeep integer [] Description
display CheckpointThreads integer [] Description
display far float [] Description
display HostComputer string [] Description
display mode string [] Description
display near float [] Description
display Nl float[16] [] Description
display NP float[16] [] Description
display origin integer[2] [] Description
display OriginalSize integer[2] [] Description
display PixelAspectRatio float [] Description
display remap float[3] [] Description
display Software string [] Description