Well I know *that* :) my question was more about if Softimage would clip the values or not when we use Float/Half Float. Maybe it's wasn't all that clear (looking back at how I wrote the question).
Maybe if I put it this way Will the "Color Channel Clipping" be disabled if we use EXR (float or half float)? Or do we need to manually set it to "no clipping"? regards stefan andersson On Sat, Jan 26, 2013 at 5:02 PM, Leonard Koch <[email protected]>wrote: > EXR Half Float works exactly the same way as Full Float. > The only difference will be, that you won't have as many possible steps in > between the very bright and the very dark if I'm not mistaken. > Half Float or also known as Half Precision = 16 bit > Full Float or also known as a Single = 32 bit > > It's a bit of a misnomer really, especially "Half Precision", since 16 > bits has 2^16 steps of precision and 32 bits has 2^32 steps of precision. > 16 bits isn't half as precise but instead 2^16 or 65536 times less precise. > > Half really only refers to the filesize in this case, which will indeed be > always a little more than half of a full float file. > > In my experience, half float is usually totally fine. > > > On Sat, Jan 26, 2013 at 4:39 PM, Stefan Andersson <[email protected]>wrote: > >> As I'm again forced into the wonderfu%$##@!l world of mental ray. I was >> just wondering if about the "Color Channel Clipping" option in the render >> settings. The Docs says >> >> *"The Color clipping option defines how colors are clipped to a 0 to 1 >> range if they are not being written at floating-point precision"* >> >> Well, so if *I am* writing out EXR Half float it doesn't do the >> clipping? or does it? >> >> regards >> stefan >> >> >> -- >> *Stefan Andersson | Digital Janitor* >> blog <http://sanders3d.wordpress.com> | showreel<http://vimeo.com/sanders3d>| >> twitter <http://twitter.com/sanders3d> | >> LinkedIn<http://www.linkedin.com/in/sanders3d>| cell: >> +46-73-6268850 | skype:sanders3d >> >> >> > -- *Stefan Andersson | Digital Janitor* blog <http://sanders3d.wordpress.com> | showreel<http://vimeo.com/sanders3d>| twitter <http://twitter.com/sanders3d> | LinkedIn<http://www.linkedin.com/in/sanders3d>| cell: +46-73-6268850 | skype:sanders3d
