Datasheet

2 KODAK PROFESSIONAL BW400CN Film • F-4036
EXPOSURE
Daylight Exposure:
Use the exposures in the table below for average frontlighted
subjects from 2 hours after sunrise to 2 hours before sunset.
*
Use f/8 for backlighted close-up subjects.
†
Subject shaded from the sun but lighted by a large area of sky.
Existing Light
*
Leave shutter open for several bursts.
†
Use a tripod or other firm camera support for exposure times longer than
1/30 second.
‡
Use shutter speeds of 1/60 second or longer with fluorescent light.
Lighting Conditions Shutter
Speed
(seconds)
Lens Opening
Bright/Hazy Sun on Light
Sand or Snow 1/500 f/22
Bright or Hazy Sun,
Distinct Shadows 1/500 f/16
*
Weak, Hazy Sun, Soft
Shadows 1/500 f/11
Cloudy Bright, No
Shadows 1/500 f/8
Heavy Overcast, Open
Shade
†
1/500 f/5.6
Subject and Lighting
Conditions
Shutter Speed
(second)
Lens Opening
Home Interiors at Night
—Average Light
—Bright Light
1/30
1/30
f/2
f/2.8
Fireworks
—Aerial Displays
*
—Displays on Ground
"Bulb" or
"Time"
†
1/60
f/16
f/4
Interiors with Bright
Fluorescent Light 1/60
‡
f/4
Brightly Lit Street Scenes
at Night 1/60 f/2.8
Neon and Other Lighted
Signs 1/125 f/4
Floodlighted Buildings,
Fountains, Monuments 1/15
*
f/2
Night Football, Soccer,
Baseball, Racetracks 1/125 f/2.8
Basketball, Hockey,
Bowling 1/125 f/2
Stage Shows
—Average Light
—Bright Light
1/60
1/125
f2.8
Circuses and Ice Shows
—Floodlighted Acts
—Spotlighted Acts
1/125
1/250
f/2.8
School—State and
Auditorium 1/30 f/2
Electronic Flash
Use the guide numbers in the table below as starting-point
recommendations for your equipment. Select the unit output
closest to the number given by your flash manufacturer.
Then find the guide number for feet or metres.
To determine the lens opening, divide the guide number
by the flash-to-subject distance. If negatives are consistently
too dense (overexposed), use a higher guide number; if they
are too thin (underexposed), use a lower number.
*
BCPS = beam candlepower seconds
Exposure Adjustments for Long and Short
Exposures
No exposure compensation for reciprocity failure is
necessary for exposures between 1/10,000 and 120 seconds.
We do not recommend exposures longer than 120 seconds.
For critical applications, make tests under your conditions.
Filter Factors
Multiply the normal (unfiltered) exposure time by the filter
factor.
*
Average filter factor, which may vary slightly depending on the
manufacturer. Polarizing filters are not manufactured by Kodak.
Unit Output
(BCPS)
*
Guide Number
For Distances in
Feet
For Distances in
Metres
350 85 26
500 100 30
700 120 36
1000 140 42
1400 170 50
2000 200 60
2800 240 70
4000 280 85
5600 340 105
8000 400 120
KODAK WRATTEN
Gelatin Filter
Daylight Tungsten
Multiply
Exposure By
(Filter Factor)
Multiply
Exposure By
(Filter Factor)
No. 8 (yellow) 1.4 1.25
No. 11 (yellowish Green) 3 3
No. 15 (deep yellow) 2 1.4
No. 25 (red) 8 3
No. 47 (blue) 12.5 16
No. 58 (green) 5.6 4
Polarizing Filter
*
2.5 2.5