File:ASA DIN conversion table.jpg

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English: table
Date
Source Unknown sourceUnknown source
Author Unknown authorUnknown author

Text version

Conversion Table for Speed Numbers
B.S.I. Log Exposure Index A.S.A. & B.S.I. Exposure Index H. & D. British D.I.N. American Scheiner Weston G.E.C. European Scheiner
10° 0.8 25 1/10 5° 0.5 — 11°
11° 1.0 31 2/10 6° 0.62 1 12°
12° 1.2 37 3/10 7° 0.75 1.5 13°
13° 1.6 50 4/10 8° 1 2 14°
14° 2.0 62 5/10 9° 1.25 — 15°
15° 2.5 78 6/10 10° 1.5 3 16°
16° 3 100 7/10 11° 2 4 17°
17° 4 125 8/10 12° 2.5 5 18°
18° 5 150 9/10 13° 3 6 19°
19° 6 200 10/10 14° 4 8 20°
20° 8 250 11/10 15° 5 10 21°
21° 10 300 12/10 16° 6 12 22°
22° 12 400 13/10 17° 8 16 23°
23° 16 500 14/10 18° 10 20 24°
24° 20 600 15/10 19° 12 24 25°
25° 25 800 16/10 20° 16 32 26°
26° 32 1000 17/10 21° 20 40 27°
27° 40 1200 18/10 22° 24 48 28°
28° 50 1600 19/10 23° 32 64 29°
29° 64 2000 20/10 24° 40 80 30°
30° 80 2400 21/10 25° 48 100 31°
31° 100 3200 22/10 26° 64 125 32°
32° 125 4000 23/10 27° 80 150 33°
33° 160 4800 24/10 28° 96 200 34°
34° 200 6400 25/10 29° 128 250 35°
35° 250 8000 26/10 30° 160 300 36°
36° 300 9600 27/10 31° 200 400 37°
37° 400 12800 28/10 32° 250 500 38°
38° 500 16000 29/10 33° 300 600 39°
39° 600 20000 30/10 34° 400 800 40°
40° 700 25000 31/10 35° 500 900 41°
41° 1000 30000 32/10 36° 600 1000 42°

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