Yeah I think I just misunderstood it. Sorry for that. regards stefan
On Sat, Jan 26, 2013 at 5:59 PM, Leonard Koch <[email protected]>wrote: > I thought I answered that question. > You already had this from the documentation: > > *"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"* > And then I wrote: > *"EXR Half Float works exactly the same way as Full Float."* > > Unless I'm misunderstanding you that should clear it up. > That setting doesn't impact any float or half float formats. > Float formats don't clip, they adjust their range based on the numbers > your scene throws at them. > > > On Sat, Jan 26, 2013 at 5:42 PM, Vladimir Jankijevic < > [email protected]> wrote: > >> this setting is ignored if rendered to EXR or other float formats >> >> >> On Sat, Jan 26, 2013 at 11:37 AM, Stefan Andersson >> <[email protected]>wrote: >> >>> 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 >>> >>> >>> >> >> >> -- >> --------------------------------------- >> Vladimir Jankijevic >> Technical Direction >> >> Elefant Studios AG >> Lessingstrasse 15 >> CH-8002 Zürich >> >> +41 44 500 48 20 >> >> www.elefantstudios.ch >> --------------------------------------- >> > > -- *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
