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Development aid to lighten zones V11 and V111

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analogsnob

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Although I have stated it empirically I think we mean the same thing. To restate in different terms my normal is that curve which contains the point where a Zone V exposure intersects with 0.90. N+1 is the curve which contains the point where Zone V exposure intersects 1.10. From a visualization standpoint the Zone moves or transforms is perhaps more precise.

I am choosing only certain of the infinate number of possible curves by defining certain aim points and using only those curves that meet at those points. When standing infrount of the subject I am making a choice of which value is placed and another for the developing strategy. I could look at the problem from the perspective of a luminance value which"falls" on zoneX being processed to yield a zone VIII density in the print but it was always easier to think of it "moving". So to put it in curve terms I am choosing to process the film using the time that yields the curve where a Zone VII exposure yields a density of 1.10 which is also (in this example) the curve which contains the point where a Zone X exposure (luminance value) yields a density in the negative of 1.50 which I call (arbitrarily) N-1.

You are right the Zones donot move along the same curve but that also is not what I have been trying to say.

I always found that a curve set without the zone system definitions and the short hand associated with it virtually useless in the field. The concepts of "place" "fall" and of Zones "moving" with development may be scientifically imprecise but they are practical and intuitive in use.
 

Kirk Keyes

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Loyd Jones [...] states for the soft papers, the density ranges of the negatives should in most cases exceed the exposure range of the paper, whereas, for the hard papers, the density ranges of the negatives should in most cases be less than the exposure range of the paper.

Steve - I don't think we've ever talked about this, and if so, it was a LONG time ago.

What reason did Jones give for this?
 
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Steve - I don't think we've ever talked about this, and if so, it was a LONG time ago.

What reason did Jones give for this?

Kirk,

I know this will not come as a surprise to you. It's the reason for all the photography standards, and another important component that is never discussed, yet is key to film speeds, negative density ranges, and even Zones. Jones was referring to psychophysics.

Steve
 

Chuck_P

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I am choosing only certain of the infinate number of possible curves by defining certain aim points and using only those curves that meet at those points.

OK, I think I see what you are saying and I think I know how Fred Picker felt :tongue:. It's not for me and it doesn't have to be but I was just trying to understand what you were doing, it wasn't clear. It's more important that it works for you, obviously. Perhaps you should call it, AS for The "Analogsnob System".
 
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