[Sidefx-houdini-list] Film at 16 bit

Larry Giunta larry at gcreativestudios.com
Fri Mar 7 18:01:15 EST 2008


yes, printing it all out as I type this email

Great information as always.
Thanks so much to all for sharing such very helpful info!!
I feel like I've just taken a graduate level course in film  
101 ...... and it was obviously needed.


Thanks again !!

Larry



On Mar 7, 2008, at 5:45 PM, Michael Goldfarb wrote:

> is someone writing this down?
>
> Peter Robbinson wrote:
>> Wow, that's a hell of a lot of useful information in a very few  
>> words.
>>
>> Thanks Mark!
>>
>> Peter
>>
>> Mark Alexander wrote:
>>
>>> Both 16b Int and 32b FP are XMMX and SSE optimized. 16b FP is the
>>> slowest of the bunch, being a format that is not native to the  
>>> CPU (it
>>> is pretty much always up-converted to FP32). 16b Int is probably the
>>> most work, since you have to worry about the white point (setting it
>>> somewhere around 4000 for really HDR stuff).
>>>
>>> However, you can save all your files in 16b FP and force the  
>>> compositor
>>> to load them as FP32 files. Edit->Composite Project Settings, "Pixel
>>> Format" = "32 bit FP" and "File Operators use the Project Pixel  
>>> Depth by
>>> Default" = "On". That save disk space and network bandwidth, while
>>> optimizing performance in COPs by comp'ing everything in 32b FP.  
>>> You can
>>> still save out 16b FP files at the end without any problems.
>>>
>>> Cheers,
>>> M.
>>> _______________________________________________
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>>> Sidefx-houdini-list at sidefx.com
>>> https://lists.sidefx.com:443/mailman/listinfo/sidefx-houdini-list
>>>
>>>
>>
>>
>
> -- 
> ...................................................................... 
> .
> Michael Goldfarb                            email: goldfarb at corefa.com
> c.o.r.e. digital pictures                        http://www.coredp.com
> ...................................................................... 
> .
> "Unless you're an astronaut, secret agent, vampire hunter,
> or all three, you're probably a sellout; screw you."
> - Maddox 2003
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