Kodak AS-75 manual Applications, Safelight, Exposure, Base, Total Film Thickness, Weight

AS-75

KODAK DOUBLE-X AEROGRAPHIC Film 2405

KODAK DOUBLE-X AEROGRAPHIC Film 2405 is a panchromatic, negative aerial camera film with good contrast for easier interpretation from negatives, high resolution, and wide exposure latitude. Its extended red sensitivity permits greater speed with the filters used for the reduction of atmospheric-haze effects.

The ESTAR Base provides flexibility, moisture resistance, high tear resistance, and excellent dimensional stability. This film has a thin, highly hardened, and abrasion-resistant emulsion that permit high-temperature rapid processing in modern continuous-processing machines.

This film can be processed in the KODAK VERSAMAT Film Processor, Model 11 or 1140, with KODAK VERSAMAT 885 Chemicals, KODAK VERSAMAT

641 Chemicals, or KODAK VERSAMAT Chemicals, Type A. KODAK DOUBLE-X AEROGRAPHIC

Film 2405 can also be processed at normal temperatures in conventional rewind equipment, such as the Gordon/Morse M-10 Developing Outfit (Military Designator: B-5) using a variety of Kodak black-and-white developers

APPLICATIONS

KODAK DOUBLE-X AEROGRAPHIC Film 2405 is a medium- to high-speed film for aerial mapping, charting, and general aerial photography.

SAFELIGHT

Total darkness is required.

EXPOSURE

Aerial film speeds (ISO A or EAFS) should not be confused with conventional film speeds which are designed for roll and sheet films used in pictorial photography. The characteristics of aerial scenes differ markedly from those of ordinary pictorial or ground scenes because of the smaller range in subject luminances, atmospheric haze conditions, and other factors. Therefore, different film-speed parameters are used to relate aerial-scene characteristics to practical exposure recommendations. The KODAK Aerial Exposure Computer, KODAK Publication AS-10 has been published based on the aerial film speed criterion.

Nominal speed, daylight (no filter): EAFS or ISO A 400

Other suggested aerial film speeds for processing this film in the KODAK VERSAMAT Film Processor, Models 11 or 1140, using VERSAMAT 885 Chemicals, 641 Chemicals and Type A Chemicals can be found in the sensitometric data tables.

Note: The aerial film speeds given in this publication were obtained by rounding the calculated values to the nearest cube root of 2 step (equivalent to 1⁄3 stop).

BASE

3.9-mil(0.10 mm) ESTAR Base with a dyed-gel backing

TOTAL FILM THICKNESS

The nominal total thickness (unprocessed) of this film is

4.50mils (0.114 mm). This includes emulsion—0.40 mil (0.010 mm), base—3.9 mils (0.10 mm), and backing—

0.20mil (0.005 mm).

WEIGHT

The weight of 2405 Film (unprocessed), conditioned in equilibrium with 50 percent relative humidity, is 0.035 lbs⁄ft2 (0.0159 kg/ft2).

SPECTRAL SENSITIVITY

Panchromatic, with extended red sensitivity.

Filters

KODAK PROFESSIONAL WRATTEN Gelatin Filter

	No. 3	No. 8	No. 12	No. 15	No. 25
Filter Factor	1.5	2	2	2.5	4

Typical Camera Exposure

A typical exposure for this film is approximately 1⁄750 second at f⁄8. This exposure is based on a solar altitude of 40 degrees, a clear day, an aircraft altitude of 5,000 feet, and a speed of ISO A 400, using a 2X antivignetting filter.

Reciprocity Characteristics

No exposure or development time adjustments are required for exposure times from 1⁄1,000 second to 1⁄10 second; at 1⁄10,000 second, increase the development time by 10 percent.

©Eastman Kodak Company, 2005