Kodak 7280 User Manual

TECHNICAL DATA /

COLOR REVERSAL FILM

K OD AK EKTA CHR OME 64T Color Rever sal Film 7280

May 2005 • H-1-7280t

KOD AK EKTACHR OME 64T Color Reversal Film 7280 is a 64-speed color reversal motion picture camera film designed for exposure with tungsten illumination (3200 K). This film offers excellent color reproduction, f ine grain, and high sharpness. 7280 has outstanding reciprocity characteristics, which give consistent color balance and speed over a wide range of exposures. EKTACHR OME 64T Film should be processed in an E-6 Process.

Manufacturing Code Size

7280 Super 8 Silent x 50 ft

BASE

KODAK EKTACHROME 64T Color Reversal Film 7280 has an acetate safety base.

DARKROOM RECOMMENDATIONS

Do not use a safelight. Handle unprocessed film in total darkness.

STORAGE

Store unexposed film at 13°C (55°F) or lower. For extended storage, store at -18°C (0°F) or lower. Process exposed film promptly. Store processed film according to the recommendations in ANSI/PIMA IT9.11-1998: for medium-term storage (minimum of ten years), store at 10°C (50°F) or lower at a relative humidity of 20 to 30 percent; for extended-term storage (for preservation of material having permanent value), store at 2°C (35°F) or lower at a relative humidity of 20 to 30 percent. For active use, store at 25°C (77°F) or lower, at a relative humidity of 50 +/- 5 percent. This relates to optimized film handling rather than preservation; static, dust-attraction and curl-related problems are generally minimized at the higher relative humidity. After usage, the film should be returned to the appropriate medium- or long-term storage conditions as soon as possible.

For more information about medium- and long-term storage, see ANSI/PIMA IT9.11-1998, SMPTE RP131-2002, and KODAK Publications No. H-1, KODAK Motion Picture Film available online at http:// www.kodak.com/US/en/motion/support/h1, and No. H-23, The Book of Film Care.

EXPOSURE INDEXES

Tungsten (3200 K) - 64 / Daylight (5500 K) - 401

Use these indexes with incident- or reflected-light exposure meters and cameras marked for ISO or ASA speeds or exposure indexes. These indexes apply for meter readings of average subjects made from the camera position or for readings made from a gray card of 18-percent reflectance held close to and in front of the subject. For unusually lightor dark-colored subjects, decrease or increase the exposure indicated by the meter accordingly.

COLOR BALANCE

These films are balanced for exposure with tungsten illumination (3200 K). For other light sources, use the correction filters in the table below.

Light Source KODAK Fil ters on

Daylight (5500 K) WRATTEN Gelatin No.

Tungsten (3000 K) WRATTEN Gelatin No.

T ungsten Photoflood (3400 K)

Tungsten (3200 K) None 64 White-Flame Arcs WRATTEN Gelatin No.

Yellow-Flame Arcs Color Compensating

OPTIMA 32 None 64 VITALITE WRATTEN Gelatin No.

Fluorescent, Cool White

Fluorescent, Deluxe Cool White

Metal Halide (H.M.I.) WRATTEN Gelatin No.

These are approximate corrections only. Some light sources are

extremely variable. For critical applications, light source color temperature should be v erified and test e xposures s hould be perf ormed.

Camera

Filter 20Y

WRATTEN Gelatin No.

85+ 10M

WRATTEN Gelatin No.

85C + 10R

82B

None 64

85B

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

1.With a KODAK WRATTEN Gelatin Filter No.85.

Exposure

Index

©Eastman Kodak Company, 2005

RECIPROCITY CHARACTERISTICS

You do not need to make any filter corrections or exposure adjustments for exposure ti mes from 1/10,000 to 1 second.

PROCESSING

Process this film in KODAK Chemicals, Process E-6, cine machine only.

IDENTIFICATION

After processing, the product code number and other manufacturing identifications are visible along the length of the film.

CURVES

4.0

3.0

2.0

DENSITY

Sensitometric Curves

Camera Stops

-6 -4 -2 0 2

-8

Exposure: Process:

B G R

Densitometry:

E-6

3200 K Tungsten 1/10 sec

Status A

FILM-TO-VIDEO TRANSFERS

When you transfer the film directly to video, you can set up the telecine using the KODAK EKTACHROME Telecine Analysis Film (T AF) supplied by Eastman Kodak Company . The TAF consists of a neutral density scale and an eight-bar color test pattern with a LAD gray surround.

The TAF gray scale provides the telecine operator (colorist) with an effective way to adjust subcarrier balance and to center the telecine controls before timing and transferring a film. The TAF color bars provide the utility of electronic color bars, even though they do not precisely match the electronically generated color bars. Using the TAF will help obtain optimum quality and consistency in the film-to-video transfer. For more information regarding TAF, see KODAK Publication No. H-822, KODAK Telecine Analysis Film User's Guide.

IMAGE STRUCTURE

The modulation-transfer curves, and the diffuse rms granularity data were generated from samples of 7280 Film exposed with tungsten light filtered to 3200 K and processed as recommended in Process E-6 chemicals.

MTF:

The "perceived" sharpness of any film depends on various components of the motion picture production system. The camera and projector lenses and film printers, among other factors, all play a role. But the specific sharpness of a film can be measured and charted in the Modulation Transfer Curve.

1.0

0.0

4.0 2.0 1.0 0.0 2.0

TI2639AF 5-05

3.0 LOG EXPOSURE (lux-seconds)

1.0

The curves describe this film's response to red, green, and blue light. Sensitometric curves determine the change in density on the film for a given change in log exposure.

Modulation-Transfer Function Curves

200 100

70 50

30 20

7 5

RESPONSE (%)

3 2

TI2639B 5-05

SPATIAL FREQUENCY (cycles/mm)

1001 2 3 4 5 10 20 50 200 600

rms Granularity:

Refer to curve. Read with a microdensitometer, (red, green, blue) using a 48-micrometre aperture.

The "perception" of the graininess of any film is highly dependent on scene content, complexity, color, and density. Other factors, such as film age, processing, exposure conditions, and telecine transfer may also have significant

This graph shows a measure of the visual sharpness of this film. The x-axis, "Spatial Frequency," refers to the number of sine waves per millimeter that can be resolved. The y-axis, "Response," corresponds to film sharpness. The longer and flatter the line, the more sine waves per millimeter that can be resolved with a high degree of sharpness—and, the sharper the film.

effects.

2 KODAK EKTACHROME 64T Color Reversal Film 7280 • H-1-7280t

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