Re: [Openexr-devel] Query: Image Based Lighting and HDRI-enabled cameras

[Anders Dahnielson]

mån 2003-07-28 klockan 19.46 skrev Anders Dahnielson:
> > Zap> Anyway. The QUESTION is, is there... or can there be built, a
> > Zap> camera that works like e.g. the 24p cameras George Lucas used on
> > Zap> Episode II... but that shot in HDRI *directly*?
> > 
> > You don't want that.  You want raw data from the sensor.  Then you
> > can convert it to hdri at your leisure, w/o losing anything.
> 
> I'm trying to figure out how to translate and express dynamic range into
> f-stops based on dB values in CCD image sensor specifications.
> 
> Can a CCD with 60 dB be expressed as having 20 f-stops of dynamic range?
> 
> Or am I totaly off base?

Yes I am. That would be 10 f-stop of dynamic range.

--
Anders Dahnielson
<address@hidden>

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