HOME > FILM > BPF-200/BRF-200 FILM
Film: BPF-200/BRF-200 Film
BPF 200 is a panchromatic black and white film for general outdoor and studio photography. BRF 200 is available in both 120 and 135/36 sizes, along with BPF200 sheet film in sizes from 4x5 through 20x24.
Outdoor Daylight Exposure
Automatic
cameras and electronic exposure meters should be set for a speed value
according to the film used (200 ASA). Without exposure meter, it is recommended
to use an exposure time of 1/250 sec with different lens openings.
Users have had good results with ASA ratings from 80 to 125.
Indoor Exposure
BPF
200 and BRF 200 films are sensitized particularly for indoor
exposures, giving excellent results with artificial light.
Adjustments for Long Exposures
Use
the following chart as a guide for corrections for reciprocity characteristics
of this film.
Processing
The
films BPF 200 should be handled in total darkness. After development is
half completed, you can use a Kodak #3 safelight filter (dark green) with
a 15-watt bulb for a few second. Keep safelight at least 3 feet from the
film. The recommended developers and developing conditions are included
in the chart enclosed. Continuous agitation of the tank is recommended
in the first minute of development, then provide agitation of 5 sec. every
30 seconds for remaining development time. Due to inherent variations
in individual agitation methods and equipment, these recommendations should
be used only as a starting point.
Development
All
times are for 20°C (68°F) unless stated.
PRIVATE DEVELOPER |
ASA |
MINUTES |
PRIVATE D-23 |
200 |
6.5 |
D-23 (1+3) |
200 |
18 |
D-76/ID-11 |
200 |
9 |
D-76/ID-11 (1+1) |
200 |
13.5 |
DK-50 |
200 |
5.5 |
DK-50 (1+1) |
200 |
8 |
Ethol UFG |
200 |
8.25 |
HC-110 (B) |
200 |
6 |
PMK (1+2+100) |
200 |
12 |
Rodinal (1+25) |
200 |
6.5 |
Rodinal (1+50) |
200 |
12 |
Storage and Handling
Store
unexposed film at 24°C (75°F) or lower in the original sealed
package. Process film promptly after exposure. Store processed film in
a cool, dry place.
Complaints
In case of a quality
complaint, the defective material should be returned to us marked with
its emulsion number. Should the tests prove the complaint to be well founded,
the defective material will be replaced free of charge. No further claims
can be considered.
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Note: While Bergger Products Inc have made every effort to ensure the accuracy of this data, it is always advisable to run some tests of your own before developing important work. Please use these times as starting points only. Data like this should always be treated as guidelines because of the tremendous number of variables involved.
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