On 12/27/2012 3:37 AM, John Francis wrote:
On Wed, Dec 26, 2012 at 02:33:35PM -0600, William Robb wrote:
On 26/12/2012 2:23 PM, John Francis wrote:
I remember film (and exposure meters) with ratings in both the ASA and DIN
systems.
Yup, Tri-X Pan film (for example). 400/24.
Are you sure? I thought I remembered 100/21. which would mean 400/27.
WikIpedia can be a blessing as well as a curse, it appears that you are
correct. TRI-X would be ISO 27°.
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