From: Ray Rogers (earthsoda@yahoo.com)
Date: 02/11/00-04:00:31 PM Z
The DIN is German.What I need is from the period just
before that...actually, I would like to see the ISO
equilivelent of much of the old stuff..."Defender" et
al. But thanks
--- James Romeo <jromeo@iopener.net> wrote:
> I remember back the late 40's and early 50's there
> were three numbers ASA,DIN and Westen The ASA was
> mostly USA DIN was Europe and Westen was for The
> Westen meter. Most films listed bolth Westen had a
> table to convert the numbers. Now it is all ASA. I
> have a old westen meter and the conversion is still
> taped in the meter case James Romeo
> -----Original Message-----
>
> From: alt-photo-process-l@sask.usask.ca
> To: alt-photo-process-l@sask.usask.ca
> Subject: H and D Curve and the ISO Scale
> equivalents?
> Date: Fri, 11 Feb 2000 12:34:06 -0800 (PST)
>
> Hi!
> I was wondering if anyone knows just when we began
> to
> use ASA numbers? I was looking at 1939-1950 magazine
>
> ads for Ansco and Kodak sensitive materials and the
> the lack of speed information is, well, noticeable.
>
> Any one know of a chart listing the equivalent
> speeds
> for the former H&D speeds with the ISO (or ASA)
> speeds?
>
> Thanks... and sorry about the off topic(?)subject,
> but
> the recent inquires of that um... commercial entity
> just seemed to open this can of worms...that stuff
> about international standards of light and...well if
>
> you have any information, use your own discretion as
>
> to whether it should go on or off list. Thanks.
>
> Ray
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