BOLEX S-221 Technical Information download pdf (Page 152)

©Eastman Kodak Company, 2003

September 2003 • H-1-7265t

TECHNICAL DATA /

BLACK-AND-WHITE REVERSAL FILM

KODAK PLUS-X Reversal Film 7265

KODAK PLUS-X Reversal Film 7265 (16 mm) is a

medium-speed, panchromatic black-and-white film suitable

for general exterior photography. It has a high degree of

sharpness, good contrast, and tonal gradation. It can also be

used in interior photography with ample artificial

illumination.

BASE

KODAK PLUS-X Reversal Film 7265 has a grey acetate

safety base. The back side of the base contains an antistatic

layer with a carnauba wax lubricant.

DARKROOM RECOMMENDATIONS

Reversal Processing -

All processing operations should be carried out in total

darkness until development is 50 percent completed. If

necessary, the film can be examined using a KODAK

3 Safelight Filter / dark green, with a 15-watt bulb, no closer

to the film than 1.2 meters (4 feet).

Negative Processing -

No safelight is recommended until after the stop bath.

Unprocessed films must be handled 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

For recommended reversal processing:

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 light-

or dark-colored subjects, decrease or increase the exposure

indicated by the meter accordingly.

For negative processing (gamma=1.0) in a typical motion

picture negative developer, use the following exposure

indexes:

When exposing in super 8 cameras through a KODAK

WRATTEN Gelatin Filter No. 85, the effective speed is

reduced to 64 for daylight. In automatic cameras, due to the

cartridge speed and filter notching system, the film will be

exposed as follows:

Daylight (no filter) - 100

Daylight (with filter) - 64

Tungsten (without filter) - 80

The film latitude will provide satisfactory results at these

exposure levels.

Tungsten (3200K) - 80 Daylight - 100

Tungsten (3200K) - 20 Daylight - 25

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