Is it only 9 years since this question was last asked?
Jez, dumpster-diving-in-the-archives
*Subject:*
Re: [OM] Sunny 16? *From*: Clyde Soles <csoles@xxxxxxx<csoles@DOMAIN.HIDDEN>
> *Date*: Tue, 22 Jun 1999 11:45:14 -0600
John Hudson wrote:
>*OK older whippersnappers. Wasn't there a Scheiner [sp?] rating system at*
>*one time before DIN and ASA were invented?*
Hmmm, haven't heard that one but I'm not *that* old. However I do vaguely
recall that BDE (basic daylight exposure, aka sunny 16) was originally
calibrated for green grass and caucasian skin at a specific latitude and
altitude...I think they used pre-smog Wash DC.
On Sun, Mar 16, 2008 at 2:04 AM, Chuck Norcutt <
chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> Or the particular latitude of the earth where sunny 16 might not be
> valid and the latitude of your film might not be sufficient :-)
>
> Actually, I don't know at what latitude sunny 16 might start to fail in
> a noticeable way. I would guess maybe at +/- 60-70 degrees or
> thereabouts. Maybe some far north or south listee will tell us.
>
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