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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