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 -- 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
