Digital BW, The Print

Joe,

You need to contact me about the product you returned.  I am posting this
message here because you have not responded to my e-mails and letter.

Michael J. Pach
AdventureCam Photo
719-260-6637
www.adventurecamphoto.com


Message: 4

Date: Thu, 16 Jun 2005 18:46:32 -0000

From: "koloshor" <wiz@...>

Subject: Digital negative (was: How many shades of grey)

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Steve Kale"

<stevekale@b...> wrote:

> Ink sets such as UT7 use three. FSN has 4 (if I recall correctly).

Epson K3 has three. Not so

> long ago there was chatter from UT7 users and, I believe, from Paul

that three Ks were not

> necessary on the small picolitre printers. I used an ink setup

similar to Carl Schofield which

> ran just 2 shades of K for a particular paper (plus sepia toner for

sepia prints). Now I hear

> chatter of Piezotones (?) coming out with 8 shades of grey... The

dedicated B&W ink

> manufacturers had a great niche when Epson only had 1 or 2 Ks. The

way was left open for

> people to remix/dilute ink to provide B&W printers with better tonal

gradation (less dots) with

> quad/hex/sep setups. I am interested in hearing from specialist

B&W printers who still think

> that we need more than three shades of K and why.

Five or six seems to be good for making digital negatives to print on

photographic papers. You get a much smoother dither that way. With two

colors (like Ultrachrome and QTR), you're frequently taking a pattern

that might have LK at 80% (almost full laydown)and just adding PK (or

MK) dots. These have much more "stopping ppwer" and show in the print

as white speckles. Ideally, you want minimal crossovers and maximum

coverage. This uses a lot of ink, but produces an excellent negative.

Well, you asked...

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