Dynamic Paint Image Sequence How can the Blender User produce more usable bandwidth when creating images sequences from Dynamic Paint? 

As an example I may want to use a different color where wave data is active.



Histogram. Image above.



Accentuated/Mapped Data which is consistent with some scheme of thinking.  Not Random. Image above.

For example the surface type of Waves did not use much bandwidth.  Though I may have a separate question to set expectations.

Current Situation which is a Problem

File Formats


PNG - uses @1% of the potential color value 


GIMP or Blender histogram

OpenEXR (EXR) - uses @3% of the potential color value.


GIMP will not open EXR.  
XnViewMP histogram



The color value is a measurement of the brightness of a color.

Desired

I would like to use near 100% of the color value range.

Related Success

Images produced by Dynamic Paint with Wave and Paint information.
Histograms are needed to detect the color information.
Color differences are too subtle to detect with this Blender Users eye.
Color is remapped with the color ramp.

Blender Internal Render
You can use OpenEXR instead PNG, it has 32-bit float per channel. Unused channels will be compressed