Kodak 250D manual Color Balance, Exposure Table Daylight Illumination, Reciprocity Characteristics

COLOR BALANCE

These films are balanced for exposure with daylight illumination (5500 K). For other light sources, use the correction filters in the table below.

Light Source	KODAK Filters on	Exposure
	Camera 1	Index
Daylight (5500 K)	None	250
Tungsten (3000 K)	WRATTEN Gelatin	64
	No. 80A
Tungsten (3200 K)	WRATTEN Gelatin	64
	No. 80A
Tungsten	WRATTEN Gelatin	64
photoflood(3400 K)	No. 80A
White-Flame Arcs	Color
	Compensating Filter	160
	CC20Y + CC10C
Yellow-Flame Arcs	Color
	Compensating Filter	160
	CC30C + CC10M
OPTIMA 32	WRATTEN Gelatin	64
	No. 80A
VITALITE	None	250
Fluorescent, Cool	Color
White2	Compensating Filter	200
	CC20M
Fluorescent, Deluxe	WRATTEN Gelatin	160
Cool White2	No. 82C
Metal Halide	None	250

1These are approximate corrections only. Make final corrections during printing.

2These are starting-point recommendations for trial exposures. If the kind of lamp is unknown, a KODAK Color Compensating Filter

CC20M + CC10B can be used with an exposure index (EI) of 125.

Note: Consult the manufacturer of high-intensity ultraviolet lamps for safety information on ultraviolet radiation and ozone generation.

EXPOSURE TABLE - DAYLIGHT ILLUMINATION

At 24 frames per second (fps), 170-degree shutter opening:

Lens	f/1.4	f/2	f/2.8	f/4	f/5.6	f/8	f/11	f/16
Aperture
Footcandles	10	20	40	80	160	320	640	1250
Required

Use this table for average subjects that contain a combination of light, medium, and dark colors. When a subject includes only pastels, use at least 1/2 stop less exposure; dark colors require 1/2 stop more exposure.

Lighting Contrast -

The recommended ratio of key-light-plus-fill-light to fill light is 2:1 or 3:1. However, you may use 4:1 or greater when a particular look is desired.

RECIPROCITY CHARACTERISTICS

You do not need to make any filter corrections or exposure adjustments for exposure times from 1/1000 to 1/10 second. If your exposure is in the 1-second range, it is recommended that you increase your exposure 2⁄3 stop and use a KODAK Color Compensating Filter CC10R. If your exposure is in the 10 second range, it is recommended that you increase your exposure by a stop and use a KODAK Color Compensating Filter CC10R.

PROCESSING

Process ECN-2

Most commercial motion-picture laboratories provide a processing service for these films. See KODAK Publication No. H-24.07, Processing KODAK Color Negative Motion Picture Films, Module 7 available online at http:// www.kodak.com/US/plugins/acrobat/en/motion/support/ processing/h247/h2407.pdf, for more information on the solution formulas and the procedure for machine processing these films. There are also pre-packaged kits available for preparing the processing solutions. For more information on the KODAK ECN-2 Kit Chemicals, check Kodak's Motion Picture Films price catalog.

IDENTIFICATION

After processing, the product code numbers 5205 (35 mm and 65 mm) or 7205 (16 mm), emulsion and roll number identification, KEYKODE numbers, and internal product symbol (EQ) are visible along the length of the film.

LABORATORY AIM DENSITIES (LAD)

To maintain optimum quality and consistency in the final prints, the laboratory must carefully control the color timing, printing, and duplicating procedures. To aid in color timing and curve placement, negative originals should be timed relative to Laboratory Aim Density (LAD) Control Film supplied by Eastman Kodak Company.1 The LAD Control Film provides both objective sensitometric control and subjective verification of the duplicating procedures use by the laboratory.

In the LAD Control Method,2 the electronic color analyzer used for color timing is set-up with the LAD Control Film to produce a gray video display of the LAD patch, corresponding to 1.0 neutral density (gray) on the print. The negative printing original is then scene-to-scene timed. There are specific LAD values for each type of print or duplicating film that the original can be printed on. For print films, the LAD patch is printed to a neutral gray of 1.0 visual density. For duplicating films, the specified aims are at the center of the usable straight-line portion of the sensitometric curve of the film.

1.Direct any inquiries to one of the regional sales offices.

2.Use of the LAD Control Method is described in the paper, "A Simplified Motion-Picture Laboratory Control Method for Improved Color Duplication," by John P. Pytlak and Alfred W. Fleischer in the October 1976 SMPTE Journal.

2 KODAK VISION2 250D Color Negative Film 5205 / 7205 • H-1-5205t