The speed for 35 mm camera film may be described using different units in different countries.
Film ratings used internationally:
(1) ASA - American Standards Association
(2) DIN - Deutsche Industrie Norm
(3) ISO - International Standards Organization
(4) GOST - Russia
|
ASA
|
DIN
|
GOST
|
ISO
|
|
12
|
12
|
11
|
12/12°
|
|
25
|
15
|
22
|
25/15°
|
|
32
|
16
|
28
|
32/16°
|
|
64
|
19
|
56
|
64/19°
|
|
100
|
21
|
90
|
100/21°
|
|
125
|
22
|
110
|
125/22°
|
|
160
|
23
|
140
|
160/23°
|
|
200
|
24
|
180
|
200/24°
|
|
400
|
27
|
360
|
400/27°
|
|
650
|
29
|
560
|
650/29°
|
|
800
|
30
|
720
|
800/30°
|
|
1000
|
31
|
900
|
1000/31°
|
|
1250
|
32
|
1125
|
1250/32°
|
|
3200
|
36
|
2880
|
3200/36°
|
where:
• The ISO reading is ASA/DIN.
Limitations:
• The advent of digital photography may make regular film obsolete in the future.
