rgb half vs short

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  06 June 2010
rgb half vs short

anyone know the main difference between rendering
rbg 16 short and rgb 16 half?
I know , half is a floating point with half precision:
http://en.wikipedia.org/wiki/Half_precision
16bit short is 16bit integer, means the maximum of color variations per rgb channel is 2^16 = 65536

My question is:
when it comes to production which one to pick for after effects or nuke?
 
  06 June 2010
half is better for Nuke because it's floating point (Nuke does everything in 32-bit anyway). I don't know how AE handles 16-bit float but Photoshop opens them as 32-bit because it doesn't support half.
 
  06 June 2010
yeah after effects reads it the same way as photoshop-- you have to switch to 32 bpc for it to read floating point properly. it's also incredibly slow, at least in CS4. if you have the option to use nuke, do it, it's way faster with float files.
 
  06 June 2010
what exactly means "floating point with half precision" ?
 
  06 June 2010
http://en.wikipedia.org/wiki/Floati...g-point_numbers

There is a standard for representing floating point numbers in computing, this wikipedia page should explain it.
 
  06 June 2010
cheers, looks complicated.
 
  06 June 2010
thanks guys
Nuke it is
 
  06 June 2010
Originally Posted by longrayjohnson: what exactly means "floating point with half precision" ?


Someone correct me if I'm wrong but I think this just means fewer decimal places for the float value, meaning it's not as precise as a full 32-bit float value.
 
  06 June 2010
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