Re: Re: Digital Negative Etiology

If you are doing color seperation what program are you using? I want to do some serigraphs and color seperation is the weak link in the process.

George
>
> From: Dave Soemarko <fotodave@dsoemarko.us>
> Date: 2005/02/28 Mon PM 12:40:43 GMT
> To: alt-photo-process-l@sask.usask.ca
> Subject: Re: Digital Negative Etiology
>
> It went long long time back, so I don't think we can really trace it back.
>
> When people use halftone screen to make negative and contact prints to make
> plates for printing, they were using digital negatives. Although they did
> not use computer or imagesetter to produce the negatives, the negatives were
> in fact digital (or more accurately, binary). The use of computers make the
> process simpler and quicker, but there is nothing really new about it. Just
> like when people created computer software to do accounting, they did not
> invent anything new in the field of accounting itself, but they did make
> accouting simpler and faster, of course.
>
> One might say that is not alternative process as we are discussing, but the
> principle is the same. Note that in platemaking (in the earlier type and
> some current ones too), the plates were coated with gum arabic, you expose
> it with UV light, then you wash out the unexposed area, etc. If instead of
> using metal plates, you use paper as the base, you have gum bichromate
> prints, in principle.
>
> Digital color separation, however, can be considered something new. This is
> because in the traditional 4-mask or 12-mask system, you still cannot
> completely color correct the whole gamut. In digital color separation, the
> process is not simply speeding up the 12-mask system, for example. It is
> actually using numerical analysis and interpolation algorithm to do color
> characterization and to create the separation, so technically it can be
> considered different or new.
>
>
> Dave S
>
> ----- Original Message -----
> From: "PhotoGecko Austin" <gecko@photogecko.com>
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Monday, February 28, 2005 3:02 AM
> Subject: Digital Negative Etiology
>
>
> > Greetings all,
> >
> > Just a late night rambling curiosity (. . . but these things matter, don't
> > they? -- otherwise there would be no OED): Who first (according to
> > reliable objective sources) came up with the idea of making digital
> > negatives for contact printing on whatever strata? Can anyone on the
> > list trace it back. . . . ?
> >
> > (Note to D.B.: If you claim this you'll need LOTS of witnesses.)
> >
> > It just occurred to me (while politely cajoling a few transparencies) that
> > I should know. But I don't have a clue.
> >
> > Curious minds want to throw.
> >
> > I hope you are all well and prosperous,
> > John
> > __________________________
> > John Campbell
> > PhotoGecko Studios & Gallery
> > 1413 South First Street
> > Austin, Tx 78704
> > (512) 797-9375
> >
> > www.photogecko.com
> >
> >
> >
>
>
>
Received on Mon Feb 28 09:32:36 2005