Which raw converter are you using? J. C. O'Connell wrote: > Well, only 8 stops out of print film has got > to be a mistake of some sorts, I have > seen numbers reported as high as 15 stops > out this type of film and I know for > a fact there is like 3 stops of LATITUDE > alone on the good slow color neg films, > (not to be confused with dynamic > range )which would be impossible if there > was only 8 stops total range. > > I did some tests with the DS shooting > RAW and found that I was unable to record > capture what I could easily see, even using > raw. The exposure latitude with that camera is > much smaller than color neg film. > > jco > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of > William Robb > Sent: Wednesday, March 07, 2007 3:55 PM > To: Pentax-Discuss Mail List > Subject: Re: beauty shot: Pentax K10D- 17mm lenses are out there > > > > ----- Original Message ----- > From: "Peter Lacus" > Subject: Re: beauty shot: Pentax K10D- 17mm lenses are out there > > > >> Bill, >> >> >>> DSLR cameras are showing 10 stops or more of dynamic range, which is >>> about 3 >>> stops more than that of print film, probably 5 stops more range than >>> slide >>> film. >>> >> IMHO there's only one definitive truth - film emulsions react to the >> light in a different way than linear digital sensors. Indeed it's much >> > > >> easier to extract useful data from digital RAW files but does it prove >> > > >> that digital sensor captures wider dynamic range? IMHO it proves that >> current scanners are not capable of extracting data from the film more >> > > >> than anything else. >> > > I'd have to dig out my charts from when I was learning the Zone System, > but > my recollection is that I was never able to get more than 9-10 stops out > of > B&W film without going to very exotic processing methods. > My experience working as a QC technician in the photo lab industry > indicated > to me that print film, when measured on a densitometer, was incapable of > > givng more than 7-8 stops of dynamic range. > > My observations were not dependant on scanner limitations or paper > dynamic > ranges, but on direct measurement of film samples using a device > designed > specifically for that purpose. > > William Robb > > >
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