Foma Fomapan 400 Action Black and White Negative Film (35mm Roll Film, 100' Roll) - Manual

In general
FOMAPAN 400 Action is a panchromatically sensitized, black-and-white negative
film designed for taking photographs under unfavourable light conditions or using
short exposure times. The film meets high requirements for low granularity, good
resolving power and good contour sharpness. FOMAPAN 400 Action has a nominal
speed rating of ISO 400/27
o , but due to its wide exposure latitude the film gives
good results even when overexposed by 1 EV (exposure value) (as ISO 200/24 o )
or underexposed by 2 EV (as ISO 1600/33 o ) without any change in processing, i.e.
without lengthening the development time or increasing the temperature of the
developer used.
To make prints or enlargements, Extrabrom- and Fomaspeed-type enlarging
papers are recommended; however, all sorts of black-and-white enlargement
papers can be used.
Speed
ISO 400/27 o , 27 o Č SN
Schwarzschild effect
Exposure (seconds) 1/1000–1/2 1 10 100
Lengthening of exposure 1x 1,5x 6x 8x
Correction of aperture number 0 -1 -2,5 -3
Processing
Safelighting
Total darkness or infrared light; for a short time an indirect safelighting can be used
(using e.g. an Agfa 108 filter with 15 Watt lamp at a distance of not less than 75
cm.
Development
FOMAPAN 400 Action can be processed in all common negative developers.
Recommended development times are shown in the table below (the development
times are related to development in a spiral developing tank - agitation or turning
over continuously during the first 30 seconds, then during the first 10 seconds IN
every minute). In this way, medium-contrast negatives can be obtained.
Development time (minutes) Developer
20 o C 30 o C
Fomadon LQN (1+10)
Fomadon R09 (1+40)
Fomadon P
Fomadon Excel
Kodak Xtol
Ilford Microphen
Ilford Perceptol
Ilford ID 11 stock / Kodak D76
Tetenal Emofin Liquid 9 – 10
9 – 10
10 – 11
7
7
8 – 9
9 – 10
7 – 8
6 – 7
4
–
6
2
2
2,5
4
3,5
–
When the development time has elapsed, the film is recommended to be shortly
rinsed in distilled water or dipped in a 2 % acetid acid solution for 10 seconds.
Fixing
At a temperature ranging from 18 to 25
o C for 10 minutes in any common type of an
acid fixing bath, or for at least 3 minutes in Fomafix rapid fixer.
Washing
The film should be washed in running water: for 30 minutes and 15 minutes the
temperature of water being below 15
o C and over 15 o C respectively.
It is recommended to finish the processing with the film being rinsed in distilled
water, or dipped in a wetting agent solution.
Storage
Unexposed films should be stored in the original packaging in a cool, dry place
(temperature ranging from 5 to 20
o C, relative humidity from 50 to 60 %), out of
reach of harmful vapours, gases and ionizing radiations. Films stored in a
refrigerator and a freezer should be acclimatized to room temperature for approx. 2
and approx. 6 hours respectively. Exposed films should be processed as soon as
possible.
Packaging
FOMAPAN 400 Action is available in the following sorts:
- 120 rollfilm 60 mm wide, exlusively on a 120 spool
- double-edge perforated 35 mm film in 135-36 cartridges for 36 exposures
24x36 mm; bulk lengths of 17, 30,5 and 50 m in a darkroom packaging
Other sizes are subject of an agreement with the manufacturer.
Relative spectral sensitivity
400 500 600 700
S
λ
Wavelength [nm] λ
Characteristic curves
Exposure: Daylight (5500 K), 1/20 s
Developer: Microphen at 20
o C
-3 -2 -1
2
1
0
3
2
1 – 7 min
2 9 min
3 11 min
–
–
1
O
p
ti
c
a
l
d
e
n
s
it
y
Log rel. exposure
Modulation transfer function
1,0
0,5
MTF
0,1
1 2 50 5 10 20
Spatial frequency [lines per mm]
Resolving power
90 lines per mm
Granularity
RMS = 17,5 (Microphen at 20 o C, developed to G = 0,6.
Measured at D = 1,0.
Base
The following bases are used for manufacturing the particular sorts of the film:
- 120 rollfilm - a bluish polyester base 0,1 mm thick, furnished with a matted colour
backing which will decolourize during processing. The backing has anti-halation
and anti-curling properties and prevents the incidence of Newton rings during
enlarging.
- 35 mm film - a gray or gray-blue cellulose triacetate base 0,135 mm thick.
FOMAPAN 400 Action
BLACK-AND-WHITE NEGATIVE FILM
The product has been produced and marketed in conformity
with a quality system according to the
international standard
ISO 9001.