Bill's New List was Re: [Digital BW] Dynamic Range
2002-03-25 by Martin Wesley
Bill, My plate is full. Can you moderate that one for me. I'd really appreciate it. <G> But the range of your URL address is much too compressed to encompass the full breadth and depth of the erudite discussions likely to take place in such a vaulted space. Thanks, Martin PS. Don't forget your boots. ----- Original Message ----- From: "Bill Morse" <willym@...> To: <DigitalBlackandWhiteThePrint@yahoogroups.com> Sent: Sunday, March 24, 2002 8:55 PM Subject: Re: [Digital BW] Dynamic Range > I've got it- start a new list- we'll call it: > TheNoiseOfNeverEndingDynamicRangeOrIsItDensityRangeButItHasShitToDoWithB&WDi > gitalPrinting@... list! Just start, *everybody will go there, in 2 > months you'll have 10,000 posts, and everybody'll feel great. Am I a genius > or what!??? > > LOL > > Bill > > on 3/24/02 11:18 PM, Todd Flashner wrote: > > on 3/24/02 6:27 PM, Martin Wesley wrote: > > > I am afraid that we are probably the only ones wading through this and > > should go off list or hope for a chance to actually discuss in real time. > > Please don't. This discussion will continue to rear it's head here until > it's finally put to bed. I agree it might not be everybody's taste, but you > are, in an oblique way, still discussing what is dynamic range and how it > may relate to BW prints. > > If you guys do take it off list could you at least CC me your posts - I'm > interested. > > Martin wrote: > >> I think that you are redefining dynamic > >> range in light of your electronics and digital background that are not > >> completely applicable to a paper print. > > Austin Wrote: > > Dynamic range IS dynamic range, period, what ever the application! It is > > completely applicable. As I've said, this is a point of confusion that has > > been around for some time, understanding the difference between density > > ratio values and dynamic range, and that they are not interchangeable terms. > > The term dynamic range is typically misused. It is similar to the > > misunderstanding that because positive film has a wider density range, that > > it has a higher dynamic range, and it does not. Negative film has more > > discernable tones than positive film, and yet it has a shorter density > > range. > > After the last time this discussion occurred on list Austin and I continued > it off-list, and what I came to realize is that Austin does know this stuff > inside out but he does use the terminology differently than most Photoshop > authors. I don't know which is right, or if it just boils down to what is > common usage. > > Austin's background is scanners and digital capture, and in that world, > where the data is written linearly, dynamic range is defined by the number > of discreet points of data. That's why I always thought he was confusing bit > depth with DR, because he speak of the number of tones, but he's not - > That's just how DR is considered in that world. > > Austin, there was one point in our last conversation that you promised you'd > clear up for me but did not, perhaps you could do so now? You said two > things that seemed to contradict each other: > > A) any DR can be defined by two bits of data. First off, why two bits and > not one. I'm assuming you were speaking to what you consider "range" when > you said that; If so, why not one bit of data: dmin-dmax? B) DR is defined > by the number of discreet steps of data. That seems in direct contradiction > to A. > > Could you explain the relationship of A to B? > > Thanks, > Todd > > > > Yahoo! Groups Sponsor ADVERTISEMENT > > Please visit the Group Homepage to check the Files, Bookmarks, Polls and > other resources as they are often being updated. The page is at: > > http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint > > Please follow these basic guidelines: > - Include your full name with your message. > - Include the address of your website, if you have one. > - As threads develop, trim off excess portions of earlier messages to keep > them short. > - As the topic of a thread changes remember to change the subject header. > - Good manners are required at all time. No personal attacks or "flames." > - Complete your Yahoo profile. > - Before posting a question, search the message archives and the various > resources on the homepage. > > > > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service > <http://docs.yahoo.com/info/terms/> . > > > > > [Non-text portions of this message have been removed] > > > > Please visit the Group Homepage to check the Files, Bookmarks, Polls and other resources as they are often being updated. The page is at: > > http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint > > Please follow these basic guidelines: > - Include your full name with your message. > - Include the address of your website, if you have one. > - As threads develop, trim off excess portions of earlier messages to keep them short. > - As the topic of a thread changes remember to change the subject header. > - Good manners are required at all time. No personal attacks or "flames." > - Complete your Yahoo profile. > - Before posting a question, search the message archives and the various resources on the homepage.
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