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XIV
THE AMATEUR PHOTOGRAPHER ADVERTISEMENTS
August ii, 1937
SiLO
SPEED NUMBERS
for use with any exposure meter
These speeds are for DAYLIGHT : see
note below re
artificial light
FILM
Ilford Speed Group
H. & D
Ilford published speeds tor use with Ilford Exposure Meter, Exposure Tables and British Calculators
H. & D.
Speeds based on conversion table used by Continental Manufacturers
SCHEINER
DIN jf
1
2
3
4
5 >
ROLL FILMS
16
Selo Roll Film .
D
750
2700
26
10 i
Selochrome Roll Film .
E
1200
4400
28
18
10
Selochrome Fine Grain Roll Film,
D
750
2700
26
16
No. 27 only.
10
Selo Fine Grain Panchromatic Roll
D
1000
3500
27
17
Film.
10
Selo Hypersensitive Panchromatic
E
2000
7200
30
20
Roll Film.
10
FILM PACKS
*
18
Selochrome Film Pack
E
1200
4400
28
10
Selo Hypersensitive Panchromatic
E
2000
7200
30
20
Film Pack.
10 !
FILMS FOR LEICA, Etc.
13 !
Selochrome Special Fine Grain ...
C
400
1300
23
10
Selo Extra Fine Grain Panchro
C
500
1700
24
14
matic.
10
Selo Fine Grain Hypersensitive
D
1000
3500
27
17
Panchromatic.
10
MRTP • The H. & D. figures referred to in column 2 are the ■ * Ilford Published Speeds for use with Ilford Exposure
Meters and Tables and for other British Calculators.
Artificial Light : Panchromatic emulsions may be taken as 2i times as fast to artificial light as to daylight compared with non-colour-sensitive materials of the same daylight speed.
The figures for the various Meters and Tables have been obtained by practical tests and will serve as 1 guide for exposures.
The Selo speed chart printed on thick card and of a convenient size for the waistcoat pocket can be obtained on request from all photographic dealers.
SELO
FILMS
Made in England by ILFORD LIMITED,
ILFORD, LONDON
u
PLEASE MENTION •• THE AMATEUR PHOTOGRAPHER/^ WHEN CORRESPONDING WITH ADVERTISERS.