[pure-silver] Re: estimating filter factor: gray card?
- From: Nick Zentena <zentena@xxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sat, 30 Sep 2006 11:48:40 -0400
On Saturday 30 September 2006 10:35, Camclicker@xxxxxxx wrote:
>
> I'm joining this thread late and don't really know what went on before
> but.... the factor indicated by an X on the filter ring and is only a
> factor, not an adjustment. The adjustment is the Sq. Root of the factor:
>
It's easy to use it for adjustment. Just divide your film speed by the
filter
factor.
Nick
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