No you are wrong. Dynamic range determines how small a signal you can detect in the presence of a larger signal. Bit depth determine dynamic range. If is a matter of definition and not open to interpretation.
Do yourself a favor and do some research before you start making statements that are wrong. You are only making a fool of yourself. Stick to the K/M arguments. http://en.wikipedia.org/wiki/Dynamic_range On 10/15/06, J. C. O'Connell <[EMAIL PROTECTED]> wrote: > WRONG- the bit depth determines size of the steps > Or signal fidelity. Dynamic range is determined by > Simple scaling the of analog signal. What you > Are saying is a common misconception but its just > That a misconception. Its possible to lower bit > Depth while maintaing dynamic range, you just end > Up with cruder gray scale rendering. > jco > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of > Perry Pellechia > Sent: Sunday, October 15, 2006 1:07 PM > To: Pentax-Discuss Mail List > Subject: Re: K10D 22 bit A/D conversion > > Wrong, Bit depth does determine dynamic range. The ratio of the least > significant bit to the most significant bit is by definition the > dynamic range of the ADC. > > On 10/15/06, J. C. O'Connell <[EMAIL PROTECTED]> wrote: > > Maxium output voltage from the sensor has nothing > > To do with bit depth of the ADC. Bit depth of the ADC > > Determines number of shades not the dynamic range. > > jco > > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf > Of > > graywolf > > Sent: Sunday, October 15, 2006 10:09 AM > > To: Pentax-Discuss Mail List > > Subject: Re: K10D 22 bit A/D conversion > > > > The sensor output is an analog voltage. The ADC converts that to a > > digital number. What is being said here is that they do not feel the > max > > > > output voltage from the sensor is high enough to require a 22 bit ADC. > > As I said in another post I feel that is way over simplified. > > > > -- > > graywolf > > http://www.graywolfphoto.com > > http://webpages.charter.net/graywolf > > "Idiot Proof" <==> "Expert Proof" > > ----------------------------------- > > > > > > J. C. O'Connell wrote: > > > I don't follow you. Is the capture (sensor & ADC) done at 22 bits or > > 12 > > > bits? > > > jco > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf > > Of > > > Digital Image Studio > > > Sent: Sunday, October 15, 2006 7:32 AM > > > To: Pentax-Discuss Mail List > > > Subject: Re: K10D 22 bit A/D conversion > > > > > > On 15/10/06, J. C. O'Connell <[EMAIL PROTECTED]> wrote: > > >> But its been pre-processed digitally so its not true RAW > > >> In my opinion. That's the only reason why the 22 bit processing > > >> Makes sense to me. Do the capture and preprossing at 22 bits > > >> And downconvert to 12 bit RAW for final output. > > > > > > Well you are free to hold that position but to me the output from > the > > > CCD has just been sampled and massaged to fit the 12 bit RAW profile > > > optimally. We don't know the data depth in processing, we only know > > > that the CCD is sampled with 22 bit data precision. The 12 bit RAW > > > file is contains discrete RGB data sampled under a Bayer filter > > > pattern so it has to undergo significant post processing for it to > be > > > even recognised as a colour image. > > > > > > > -- > > 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 > > > > > -- > <----------------------------------------------------> > Perry Pellechia > > Primary email: [EMAIL PROTECTED] > Alternate email: [EMAIL PROTECTED] > Home Page: http://homer.chem.sc.edu/perry > <----------------------------------------------------> > > -- > 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 > -- <----------------------------------------------------> Perry Pellechia Primary email: [EMAIL PROTECTED] Alternate email: [EMAIL PROTECTED] Home Page: http://homer.chem.sc.edu/perry <----------------------------------------------------> -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
