> > From: DagT <[EMAIL PROTECTED]> > Date: 2006/09/06 Wed AM 09:43:56 GMT > To: Pentax-Discuss Mail List <[email protected]> > Subject: Re: Advantage of increased colour depth? > > In theory I think you could gain 4 stops. One stop is x2 more light, so x2^4 > should translate to 4 stops. > > However, that requires a linear intensity response from the sensor and the > same size of the steps. If you just put 16bit within the same dynamic range > that is covered by the 12 bit you may get better nuances but not dynamic > range.... > > DagT
That's always been my interpretation. > > > Fra: "Jostein Øksne" <[EMAIL PROTECTED]> > > Dato: 2006/09/06 Wed AM 11:20:59 CEST > > Til: "Pentax-Discuss Mail List" <[email protected]> > > Emne: Re: Advantage of increased colour depth? > > > > The math is easy. There are as you say 2^4 more values available to > > describe each tone in a channel, and hence the information recorded at > > each pixel is mapped to a larger span of potential values. And that's > > even before the actual colour is computed through the Bayer-thingy. > > > > The main reason for my appreciation of RAW-files over JPG or 8-bit > > TIFF is the difference between 8 and 12-bit colour depth. It gives > > more latitude, just like print film did over slide film. > > > > I still feel more comfortable about using f-stops to describe > > latitude, and it would just be nice to know what to expect in a more > > real-world terms of reference... :-) > > > > Jostein > > > > On 9/6/06, Boris Liberman <[EMAIL PROTECTED]> wrote: > > > Jostein, > > > > > > I think it is easy. With 16 bits vs 12 bits per pixel you have 2^4 - > > > 16 times more information recorded. What use does it make - it would > > > greatly depend on RAW processing software and matching of camera > > > electronics with RAW converter number crunching. > > > > > > > > > -- > > > Boris > > > > > > -- > > > PDML Pentax-Discuss Mail List > > > [email protected] > > > http://pdml.net/mailman/listinfo/pdml_pdml.net > > > > > > > -- > > PDML Pentax-Discuss Mail List > > [email protected] > > http://pdml.net/mailman/listinfo/pdml_pdml.net > > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > ----------------------------------------- Email sent from www.ntlworld.com Virus-checked using McAfee(R) Software Visit www.ntlworld.com/security for more information -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
