Some while ago, the American Standards Association reorganized to become the American National Standards Association , but I think it still proper to reference measurements established when there was an ASA. However, ASA (ISO, ANSI) numbers are designated by manufacturers applying standard protocols. In this instance, what is being looked for is an appropriate exposure index (EI) for a film/developer combination, which may or not deviate from the ASA.
Allen Zak On Sep 25, 2007, at 8:35 AM, Eric Goldstein wrote:
... and that ASA is no more... 20 years out of date... Eric Goldstein -- On 9/25/07, ERoustom <eroustom@xxxxxxxxxxx> wrote:...and that some cameras (more recent plastic bodies) are not infrared light tight. Sounds like a lot of fun to try though. Good luck. E. On Sep 25, 2007, at 2:24 AM, Marc James Small wrote:At 01:51 AM 9/25/2007, Jim Brick wrote:Shooting infrared, initially, requires a lot of bracketing in order to find a reasonable ASA for your exposure/processing methods. Also, you can shoot at a small f/stop and avoid the infrared focus shift problem. If your lens has an infrared focus mark, then use it. There's a lot of trial and error in getting started using infrared.Jim With all humble regards, SOMEONE should tell this guy to load his camera in total darkness, as in a changing bag or the like. Marc msmall@xxxxxxxxxxxx Cha robh bàs fir gun ghràs fir! --- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list--- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with'unsubscribe' in the subject field OR by logging into www.freelists.org- Online, searchable archives are available at //www.freelists.org/archives/rollei_list--- Rollei List - Post to rollei_list@xxxxxxxxxxxxx - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' in the subject field OR by logging into www.freelists.org - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field OR by logging into www.freelists.org - Online, searchable archives are available at //www.freelists.org/archives/rollei_list
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