Kodak E-4028 manual Printer Setup, White-Light Exposure Method

Printer Setup

KODAK PROFESSIONAL ENDURA Metallic Paper is slightly slower than KODAK PROFESSIONAL PORTRA and SUPRA ENDURA Papers. As a starting point, use the same printing times and include a density series to determine your preferred exposure.

Initial conversion to this paper from KODAK PROFESSIONAL Color Metallic Paper involves rebalancing your printers. Since the green speed is about a 1/2 stop faster than Color Metallic Paper, increase your magenta filtration by approximately 15CC.

White-Light Exposure Method

Control color balance with dichroic filters built into the printer or enlarger, or with KODAK Color Printing (CP) Filters (Acetate) placed between the lamp and the negative. You can use any number of filters between the light source and the negative. If you use cyan filtration, use filters with

If your	Subtract these	OR	Add these filters
print is	filters
RED	Cyan		Magenta + Yellow
GREEN	Magenta		Cyan + Yellow
BLUE	Yellow		Cyan + Magenta

5.Remove neutral density from your filter pack. For example, if you determine that a filter pack of

40R + 10Y + 10C will give you a pleasing print:

a.Convert any primary filters (R, G, B) to their subtractive equivalents (C, M, Y):

40R = 40M + 40Y.

b.Add filters of the same color: 10Y + 40Y = 50Y.

c.If the new filter pack has all three subtractive colors, cancel the neutral density by subtracting the smallest density value from all three densities:

the suffix “-2,” (e.g. “CP10C-2”).

1.	Start with a filter pack of 60M + 45Y to make a test
	print.
2.	Evaluate the test print under light of the same color and

10C 40M 50Y

-10 -10 -10

30M 40Y =

filtration without neutral density

brightness that you will use to display the final print.

(See “Viewing.”)

3. Judge print density first. If necessary, make another

print by adjusting the exposure as recommended in the

following table:

If your	Do this	OR	Do this
print is
TOO LIGHT	Open the lens		Increase the
	aperture to increase		exposure time
	the light level
TOO DARK	Close the lens		Decrease the
	aperture to		exposure time
	decrease the light
	level

4.Then judge the color balance. You can use the KODAK Color Print Viewing Filter Kit, KODAK Publication No. R-25, to evaluate your test print. The kit contains 18 color-print viewing filters and instructions to help you determine filter adjustments for the white-light exposure method.

If your	Subtract these	OR Add these filters
print is	filters
CYAN	Magenta + Yellow	Cyan
	(Red)
MAGENTA	Cyan + Yellow	Magenta
	(Green)
YELLOW	Magenta + Cyan	Yellow
	(Blue)

6.Adjust the exposure for the new filter pack. An exposure time that produced a print of satisfactory density may not produce an acceptable density when you change the filter pack. The following table gives filter factors for calculating exposure adjustments when you use KODAK Color Printing (CP) Filters.

Filter Factors for CP Filters

Filter	Factor	Filter	Factor
05Y	1.1	05R	1.2
10Y	1.1	10R	1.3
20Y	1.1	20R	1.5
30Y	1.1	30R	1.7
40Y	1.1	40R	1.9
50Y	1.1	50R	2.2
05M	1.2	05G	1.1
10M	1.3	10G	1.2
20M	1.5	20G	1.3
30M	1.7	30G	1.4
40M	1.9	40G	1.5
50M	2.1	50G	1.7
05C	1.1	05B	1.1
10C	1.2	10B	1.3
20C	1.3	20B	1.6
30C	1.4	30B	2.0
40C	1.5	40B	2.4
50C	1.6	50B	2.9

Note: The filter factors listed in the table take into account the effects of filter surfaces.

To use the factors, divide the old exposure time by the factor for any filter you remove. If you add a filter, multiply the time by the factor. If you add or remove two or more filters, multiply the individual factors and use the result as your factor. You may need to modify these factors for your equipment.

When you adjust the filtration in equipment that has built-in dichroic filters, any noticeable differences in density

KODAK PROFESSIONAL ENDURA Metallic Paper • E-4028 3