Film Values User manual

EXPOSURE METERS

‘ASA EXPOSURE-INDEX NUMBERS

TYPE PR-1/ (Deluxe Model)

‘2 iffy with this radically new meter
‘avlomatically remembert what i

feasts bony

Se complete in every

moots the needs of the

For use with the
GENERAL () ELECTRIC
EXPOSURE

ace sete a ears om \
eg eck ABET 4

ad synchro diol le enable you METER

Peclepaes evar (att MODELS)

TYPE DW-58 (Regular Mode)

More th
ow being used by beginners, advanced
‘amateurs and professional phoiogrephers
‘Measures reflected ight and incident light
for movies or ails, Versetle

te. Excllont for toler work

holf-milion sturdy, accurate,

“It's 3 meters in one”

GENERAL@ ELECTRIC

www orphancameras.com

THIS General Electric Film Value Booklet

Contains the latest listing of exposure-index
numbers for the most frequently used photo-
graphic fms in accordance with the new aystem
for rating. photographie. films that has been
‘devised by the American Standards Association.

“This system has been under development for
several years and is the result of cooperative
‘fort on the part ofall the blen manufacturers,
eter manufacturers, the Optical Society of
‘America, and the Bureau of Standards. It was
used by all ofthe military services during the war.
‘The new ASA exposure index numbers provide
the photographer with the most accurete flm-
‘ating information that has yet been devised.

“The GE exposure meter uses the ASA ex:
posure.index numbers, not only in the intrest of
Standardization, but also because this system
represents a real advancement in the feld of
measurement.

“The exposure.index numbers have been 20
arranged that al eatlir model G-E meters ean be
‘sed with this series of numbers. For some flims
the values ate exactly’ the same; and. where
dilferences exist, the new ASA exposure index
Yalue will cause but a slight increas in exposure,
However for your convenience, a comparison of
the new ASA exporuresindex mumbere and the
GEEm values i shown in the table below. A
complete comparison of all systems of emulsion
speed values can be found in the G-E Photo

and typeof equipment can
f'yourpctare ou muy find
cation in exports peceary
be done with your GE exporre
tly modiving the exposure index
felting either up or dovm os to obtain the

bropet rent. Use 1 higher, number for le
‘exposure and a lower number for more exposure.
change does not change the expos

of a film, but is a means for compen:
variables in your equipment.

A GE mete outed ter Jey,
1946, utilize the ASA ex
the new ASA values can be used with ll previous
model G-E. meters, interchangeable calculator

for Types DW-48, DW-49, and DW.38 meters
They may be procured from your photographic

COMPARISON TABLE

Ast.) GE | ASM
posure | Film | Exposure
_“Tndex Values _||_ Index
06 6 32
08 0
10 1 50
12 1s 6
16 2 80
20 | 100
25 3 | 5
3 4 | 1 200
4 | mm 250
5 6 250300
6 8 | 320 400
8 0 | 0500
10 2 500600
2 16 | 650 800
16 2» 800 900
» 24 1000 1000
3 32