Arithmetic
Adox ---
KB 14
KB 17
KB 21
KB 27
UKB-17 Reversal
40
80
200
800
80
Ilford---
Pan F
F.P.3
H.P.3
H.P.S
50
125
400
800
Agfa---
Isopan FF
Isopan F
Isopan ISS
Isopan Record
32
80
200
1250
Kodak---
Panatomic X
Plus X
Tri-X
40
125
400
Ansco---
Super Hypan 500
Konica---
Konicapan S
Konicapan SS
Konicapan SSS
100
200
400
Ferrania---
P 24
P 30
P 33
P 66
40
160
320
640
Orwo---
NP 10
NP 18
NP 22
NP 27
8
50
125
400
Gevaert---
Gevapan 27
Gevapan 30
Gevapan 33
Gevapan 36
Dia-Direct 26
Reversal
64
125
250
500
50
Perutz---
P 14
P 17
P 21
P 25
Miniature Reversal
40
80
200
500
25
Hauff---
Pancola Granex
Pancola 17
Pancola 21
Pancola S 25
40
80
200
500
Tura---
Pan 14
Pan 17
Pan 21
Pan 24
40
80
200
400
The above film speeds are based on the latest ASA Standard, giving minimum
correct exposure to make the most of the films' versatility and image quality.
Some manufacturers, however, still quote speeds from the older system which
gives more generous exposure. This accounts for any disparity between these
tables and the manufacturers' figures.
Avoid great contrast such as deep shadows. For photographs in daylight on reversal film use daylight-type film. Use
artificial light film when taking pictures indoors by the light of electric lamps or Photofloods. Daylight film may be
used in artificial light and vice versa with the special conversion filter recommended by the makers.
Some of these conversion filters for reversal film (Wratten) are supplied in the original filter range for the Retinettes.
There is also a Kodak Skylight haze filter for daylight-type film which is used to reduce the blue haze in distant
landscape shots. This filter needs no exposure increase. It is also useful for colour photography with electronic flash,
producing a somewhat warmer result.
For taking colour pictures by flashlight, on reversal film, use daylight-type film with blue-tinted bulbs or electronic
flash.
35 mm. COLOUR FILMS
Film Type
Speed in
ASA and BS
Arithmetic
Processing
Negative Films
Agfacolor CN14 Universal 20 U
Agfacolor CN17 Universal 40 U
Ferraniacolor N27 Daylight 40 U
Fujicolor Universal 32 M
Gevacolor NS Universal 25 L
Ilford Colorprint Universal 64 M
Kodacolor Universal 32 U
Kodacolor X Universal 64 L
Telcolor Universal 16 L
Reversal Films
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