What ISO would be German Scheiner 19 degrees?

Bill Mitchell

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• Jun 12, 2006

• #1

Readling a book by Dr. Paul Wolff written in the mid-1930s.

 

ZorkiKat

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• Jun 12, 2006

• #2

Bill Mitchell said:

Readling a book by Dr. Paul Wolff written in the mid-1930s.

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From a table found in No.2\1954 Leica Fotografie: 19 Scheiner=16 ASA. More or less equivalent to ISO 16 since 1950s ASA is slightly different.

Jay

 

Marc .

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• Jun 12, 2006

• #3

19 European Scheiner = 9 Din = 5 ASA
19 American Scheiner = 15 Din = 20 ASA
from a table in web page in german on sensitometry :
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Marc

 

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Bill Mitchell

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• Jun 12, 2006

• #4

Marc . said:

19 European Scheiner = 9 Din = 5 ASA


Marc

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Thank you. No wonder I've been having such a tough time pinning it down.

 

Helen B

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• Jun 15, 2006

• #5

Rudolf Kingslake's approximate guidelines:

ISO/ASA = antilog ((Scheiner-9)/10)

DIN = Scheiner - 8

Scheiner = about 7 x log (H&D)

Best,
Helen