Re: Re: Digital Negative Etiology

George,

What is the program that you referred intended to be used for? It sounds
like it might be doing high accuracy color separation (M, M_light, C,
C_light, Y, K, plus possibly R, G, B). I am not sure if you really need
that. Or if you know exactly what you want and do your own calibration, you
can also do that with Photoshop (but it will take much more time, of
course).

Could you give me the name of the program or if they have a web site? I am
curios to see what the program is doing.

David

----- Original Message -----
From: <res1dvao@verizon.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Monday, February 28, 2005 2:10 PM
Subject: RE: Re: Digital Negative Etiology

>I know you can do three and four color seperations with Photoshop but the
>program I refered to did up to 9 color seperations. How do some printers
>end up with 20-30 screens for their prints?
>
> George
>>
>> From: Kate M <kateb@paradise.net.nz>
>> Date: 2005/02/28 Mon PM 07:02:49 GMT
>> To: alt-photo-process-l@sask.usask.ca
>> Subject: RE: Re: Digital Negative Etiology
>>
>> On second thoughts, maybe Photoshop Elements does this too...anyone
>> know????
>>
>> -----Original Message-----
>> From: Dave Soemarko [mailto:fotodave@dsoemarko.us]
>> Sent: Tuesday, 1 March 2005 6:01 a.m.
>> To: alt-photo-process-l@sask.usask.ca
>> Subject: Re: Re: Digital Negative Etiology
>>
>>
>> I don't think it is worth it. If it is for that price, you should get
>> Photoshop because it is not just better in terms of ease of use or
>> feature
>> or that type of things, but the color model and math are actually
>> better.
>>
>> If you want something less expensive, perhaps Corel's PhotoPaint will
>> do.
>> They were at one point trying to compete with Photoshop, so they might
>> be
>> competing in color model also.
>>
>> Dave
>>
>> ----- Original Message -----
>> From: <res1dvao@verizon.net>
>> To: <alt-photo-process-l@sask.usask.ca>
>> Sent: Monday, February 28, 2005 11:46 AM
>> Subject: Re: Re: Digital Negative Etiology
>>
>>
>> >I did find one program that made color seperations for t-shirt printers
>> >that cost $995.00. (How many t-shirts do you have to sell to pay for
>> that)
>> >I got a trial copy and found it was difficult to use. Hoping for
>> something
>> >better, faster, smaller, cheaper, etc.
>> >
>> > George
>> >>
>> >> From: Dave Soemarko <fotodave@dsoemarko.us>
>> >> Date: 2005/02/28 Mon PM 04:14:11 GMT
>> >> To: alt-photo-process-l@sask.usask.ca
>> >> Subject: Re: Re: Digital Negative Etiology
>> >>
>> >> If you need color accuracy, Photoshop is the best about five years
>> >> ago.
>> >> My
>> >> work at one time was very related to digital imaging, so I know that
>> you
>> >> could find a new technical article in imaging science in a technical
>> >> journal, for example, and soon you could find Photoshop implementing
>> it.
>> >> They never revealed their exact algorithm, of course, you could tell
>> by
>> >> the
>> >> terminologies they used (and things like 27x27x27 matrix).
>> >>
>> >> Now that five years have passed and imaging science, as applied to
>> >> photography, has more or less mature, maybe some other imaging
>> >> software like Corel's PhotoPaint might have the same separation
>> >> algorithm, but I haven't
>> >> followed closely lately.
>> >>
>> >> Of course one still needs to have some technical knowledge in color
>> >> separation, ink sets, balancing, etc. to produce good separation, but
>>
>> >> given that silk screening is also a commercial process, you might be
>> >> able to find
>> >> better references/resources in this area even though your application
>>
>> >> might
>> >> be in fine arts.
>> >>
>> >>
>> >> Dave S
>> >>
>> >> ----- Original Message -----
>> >> From: <res1dvao@verizon.net>
>> >> To: <alt-photo-process-l@sask.usask.ca>
>> >> Sent: Monday, February 28, 2005 10:32 AM
>> >> Subject: 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
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >>
>> >> >>
>> >> >>
>> >> >
>> >> >
>> >> >
>> >>
>> >>
>> >>
>> >
>> >
>> >
>>
>>
>>
>> --
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>>
>>
>
>
>
Received on Mon Feb 28 13:27:49 2005