P-255 • P-255 3

Adjustments for Long and Short Exposures

Compensate for the reciprocity characteristics of this film by

increasing exposure and adjusting the development as

shown.

If Indicated
Exposure
Time Is
(seconds)
Use This
Lens-
Aperture
Adjustment
OR
This
Adjusted
Exposure
Time
(seconds)
AND
Use This
Development
Adjustment
1/10,000 None None +30%
1/1,000 None None +20%
1/100 None None None
1/10 None None None
1 None None –10%
10 +
1
⁄
2
stop 15 –10%
100 +1
1
⁄
2
stops Adjust
aperture None
DARKROOM RECOMMENDATIONS

Handle unprocessed film in total darkness. After

development is half completed, you can use a KODAK

3 Safelight Filter (dark green) in a suitable safelight lamp

with a 15-watt bulb. Keep the safelight at least

4 feet (1.2 metres) from the film.

For information on safelight testing, see KODAK

Publication K-4, How Safe Is Your Safelight?

Exposure- and Contrast-Index Values for Processing in the
KODAK VERSAMAT Film Processor, Model 11
Contrast
Index KODAK
Developer
Development
Temperature
°F (°C)
Machine
Speed
(ft/min)
Developer
Racks
Exposure
Index
ISO/DIN
*
* Based on a 1/25-second daylight exposure
2.20 VERSAMAT 885 85 (29.4) 10 1 160/23°
1.40 VERSAMAT 641 85 (29.4) 10 1 125/22°
1.40 DURAFLO RT 80 (26.5) 10 2 160/23°
Changes in Speed and Contrast
Due to Long- and Short-Exposure Adjustments
F002_0195AC
1
11
0
3
23
1
3
23
1
C.I.
0.10
0.00
0.10
0.20
32842101
1
50
1
250
1
1000
1
5000
1
2
1
5
1
10
1
25
1
100
1
500
1
250010000
1
Camera
Stops
Time (seconds)
100
0.40
0.30
0.20
0.10
0.00
0.10
Exposure
Log
Tungsten or Daylight
KODAK HC-110 Developer (Dil D),
8 minutes at 68 F (20 C)
Exposure:
Process:
SPEED SHIFT
CONTRAST-INDEX SHIFT