[pure-silver] Re: Grain
- From: Claudio Bonavolta <claudio@xxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 12 Jan 2006 09:29:22 +0100
Him Tim,
Last year, De Vere kindly proposed me to send them some digital files to print
on their traditional-looking enlarger where the negative carrier is replaced by
a transparent LCD panel.
I sent them a pair of digital (color) files coming from a D70 of a friend (at
that time I still hadn't a serious scanner) and asked for 30x40cm (12x16") and
13x18cm (5x7") prints.
The small prints were absolutely fine.
The larger ones showed a kind of slight pattern probably due to the LCD matrix.
I showed these prints to several non-expert people and they all found them very
nice.
From what I now, the LCD panel is slightly moved during the exposure to
increase the number of pixels it processes.
Due to its principle, and like the enlargment of a negative, the smaller the
print, the better the quality. With "normal" laser/LED based digital enlargers
which have a fixed resolution per surface, the larger the print, the better the
quality (until you reach the limits of the file).
It's an interesting technology which should be improved somewhat.
The other problem is the actual price, far to much for an amateur, even for the
"crazy" guys we find on this mailing-list ... :-)
Best regards,
Claudio Bonavolta
http://www.bonavolta.ch
----- Message d'origine -----
De: "Tim Rudman" <tim@xxxxxxxxxxxxxxx>
Date: Wed, 11 Jan 2006 17:02:09 -0000
Sujet: [pure-silver] Re: Grain
À: <pure-silver@xxxxxxxxxxxxx>
>
><<I'm still dreaming of a digital enlarger for the advanced amateur.
>But, I'm afraid it will remain a dream for some time.>>
>
>I was looking at the De Vere version - very tasty but £18000+ with computer.
>Tim
>
>
>-----Original Message-----
>From: pure-silver-bounce@xxxxxxxxxxxxx
>[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Claudio Bonavolta
>Sent: 11 January 2006 16:37
>To: pure-silver@xxxxxxxxxxxxx
>Subject: [pure-silver] Re: Grain
>
>Hi Ralph,
>
>I too find it pricey, that's why I haven't bought it yet (nor Dan
>Burkholder's book, I must say, as it isn't recent).
>Both look to me as being very related to the equipment available making them
>obsolete pretty quickly.
>
>I've suscribed to the PDN mailing-list which is pretty active (I believed
>digital negatives were marginal, it seems not) and for the few I've seen,
>Mark seems very helpful.
>
>I'm only starting to lurke at this technology as it is one option to print
>digital files. And, for now, I'd prefer not to invest in a high-level inkjet
>printer without being certain it will really work fine with silver gelatin
>papers (B/W but color too ...).
>
>Perhaps, I'll try to find a service bureau with an imagesetter here in
>Geneva for some preliminary tests.
>
>I'm still dreaming of a digital enlarger for the advanced amateur.
>But, I'm afraid it will remain a dream for some time.
>
>
>Best regards,
>Claudio Bonavolta
>http://www.bonavolta.ch
>
>----- Message d'origine -----
>De: DarkroomMagic <info@xxxxxxxxxxxxxxxx>
>Date: Wed, 11 Jan 2006 16:57:44 +0100
>Sujet: [pure-silver] Re: Grain
>À: PureSilverNew <pure-silver@xxxxxxxxxxxxx>
>
>>Claudio
>>
>>I find the price of $75 a bit hefty for a pdf file. Dan's book is very
>>good and costs a lot less. Also the sample chapter doesn't seem to
>>work. Did you buy it? Comments?
>>
>>
>>
>>
>>
>>Regards
>>
>>
>>
>>Ralph W. Lambrecht
>>
>>http://www.darkroomagic.com
>>
>>
>>
>>
>>
>>
>>
>>On 2006-01-11 09:57, "Claudio Bonavolta" <claudio@xxxxxxxxxxxx> wrote:
>>
>>> Dear Tim,
>>>
>>> Could you keep us informed on your future tests ?
>>> I'm pretty interested by the subject too. Unfortunately, without
>>> having enough energy/time/money to spend on it.
>>>
>>> Aside Dan Burkholder's book, there is also Mark Nelson's e-book
>>> (http://www.precisiondigitalnegatives.com), basically a procedure to
>>> calculate Photoshop curves to linearize the curve on the output paper
>(whatever it is).
>>> He also set up a mailing-list
>>> (http://groups.yahoo.com/group/PDNPrint/) but the major activity is
>>> on alternative processes where the flaws of inkjet negatives show less.
>>>
>>> Thanks and best regards,
>>> Claudio Bonavolta
>>> http://www.bonavolta.ch
>>>
>>> ----- Message d'origine -----
>>> De: "Tim Rudman" <tim@xxxxxxxxxxxxxxx>
>>> Date: Tue, 10 Jan 2006 15:38:30 -0000
>>> Sujet: [pure-silver] Re: Grain
>>> À: "'Len Eselson'" <leneselson@xxxxxxxxxxxxx>,
>>> <pure-silver@xxxxxxxxxxxxx>
>>>
>>>>
>>>>
>>>>
>>>> Results are only suitable for contact printing Len, not for enlargement.
>>>>
>>>> The best I know of are:
>>>> Pictorico OHP Transparency film
>>>>
>>>> Pictorico Photo Gallery Hi-Gloss White Film - a more expensive white
>>>> glossy film that is much denser (semi-opaque) than OHP film. It
>>>> holds ink better and gives better detail and tonality for the
>>>> unforgiving nature of glossy silver prints. It can be printed
>>>> through, but at the price of greatly extended exposure times.
>>>>
>>>> Permajet Digital Transfer film - a similar transparent coated Clear
>>>> High Gloss Film and less expensive than the Pictorico above, using
>>>> the same ceramic particle technology.
>>>>
>>>> Fotospeed Digital Contact Film is also a clear gloss ceramic
>>>> technology film, slightly thinner - I will be starting tests shortly.
>>>>
>>>> Tim
>>>>
>>>> -----Original Message-----
>>>> From: Len Eselson [mailto:leneselson@xxxxxxxxxxxxx]
>>>> Sent: 10 January 2006 15:25
>>>> To: pure-silver@xxxxxxxxxxxxx; Tim Rudman
>>>> Subject: Re: [pure-silver] Re: Grain
>>>>
>>>> Tim,
>>>> What materials did you use for your negatives made on inkjet printers ?
>>>>
>>>> I tried to make digital masks on inkjet printers for conventional
>>>> printing, and for the materials I tried, found that they had a
>>>> coating of some sort, arranged in an orderly grid, which showed up
>>>> in the print when it was enlarged (MF negs, 16X20 prints)
>>>>
>>>> I tried various materials, and printers. The best being the Epson
>>>> 2200, and Pictorico Transparancy Film but the results were not
>acceptable.
>>>>
>>>> Have you found a combination which allows enlargement in the range
>>>> of 8-10 times ?
>>>>
>>>> Thanks
>>>>
>>>> Len Eselson
>>>>
>>>> On Tue, 10 Jan 2006 08:34:47 -0000, Tim Rudman wrote:
>>>>
>>>>> I have been experimenting a little with digital negatives, intended
>>>>> for silver, but also some examples with platinum.
>>>>> I joined Dan Burkholder on one of his 1 week workshops at the
>>>>> Formulary last year before giving mine there.
>>>>> I have compared image setter icefield negs and those from a number
>>>>> of inkjet printers (UK - 1290, 2100, 1400 - or I believe in the US
>>>>> 1280, 2200 & 2400)and on a variety of 'negative' materials.
>>>>> The results from desktop inkjet printers are getting pretty good
>>>>> for hand coated papers now. Silver gelatine glossy is less
>>>>> forgiving and results are not bad at all and silver gelatine matt.
>>>>> s/matt and textured are good. I imagine that they will continue to
>improve.
>>>>
>>>>> Tim
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
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>>
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