POTA vs. Delagi #8

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piterengel - 05 Feb 2004 21:10 GMT

Hi, what are advantages (if any) using Delagi #8 instead POTA with Tech Pan?

Thanks

piterengel

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Tom Phillips - 05 Feb 2004 16:52 GMT

> Hi, what are advantages (if any) using Delagi #8 instead POTA with Tech Pan?
>
> Thanks
>
> piterengel

There's not that much difference between them: both POTA and Delagi 8 (a
modified POTA) consist of Phendone and sodium sulfite. The difference is
Delagi added benzotriazole (restrainer/antifoggant) and borax. POTA was
originally intended to record very high contrast ranges (like atom bomb
blasts.) For normal scene contrast range of 7 or so stops, Delagi will
give "normal" results.

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