[LRflex] Re: B&W Film (sic) Question
- From: Miha Golobic <miha.golobic@xxxxxxxxx>
- To: leicareflex@xxxxxxxxxxxxx
- Date: Wed, 22 Jun 2011 11:43:01 +0200
2011/6/22 Kevin Willey <kevinwilley@xxxxxx>
> I'm going to shoot some new PAN F PLUS 50 in my Leica R8. In reading the
> technical info sheet, the following is listed: Meter setting EI 25/15
> EI 50/18 EI 64/19
> I understand first EI numbers (25, 50, 64). But I don't know what the
> second numbers mean after the slant bar, i.e., 15, 18, 19?
>
> I would appreciate a short explanation. I tend to shoot film at an EI
> smaller than the ISO rating.
>
> Thanks in advance.
>
> Kevin
> Seoul, Korea
>
> The secon numbers stand for DIN (Deutsches Institut für Normung = German
Institute for Standardization). The first numbers are ASA.
From Wikipedia: The American Standards
Association<http://en.wikipedia.org/wiki/American_Standards_Association>(ASA)
and the Deutsches
Institut für
Normung<http://en.wikipedia.org/wiki/Deutsches_Institut_f%C3%BCr_Normung>(DIN)
film speed standards have been combined into the ISO standards.
http://en.wikipedia.org/wiki/Film_speed
As for PanF, I shoot it at EI 32 and develop in ID11/D76.
Miha
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