Thread: Agfapan 25
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Old November 6th 04, 01:42 AM
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no-name wrote:

The other films mentioned (Copex and Bluefire Police) are microfilms which
must be processed in an extremely soft developer in order to achieve
pictorial contrast. Both are less grainy than TMax 100, which is currently
the low-grain champ of the standard film world, and both have more
conventional tonalities when correctly processed.

As Donald noted, 35mm Gigabit is Copex Rapid Pan AHU. Gigabit in sheet film
sizes is a different Agfa microfilm.

Bluefire Police is often said to be Copex Rapid Pan AHU, but it is not. When
given identical exposure in a sensitometer, and processed together in
Bluefire HR developer, they develop quite differently. In twelve minutes of
continuous agitation, Copex develops to gamma 0.33, while Bluefire Police
develops to gamma 0.48. Copex has a more abrupt shoulder, Bluefire Police a
more abrupt toe. Their speeds are about the same, but Bluefire Police is a
little faster. The emulsion colors of the two films are noticeably
different. I have tried to find out what Bluefire Police is, but I have only
been told is an Agfa microfilm not available outside Europe. Nothing more
specific.

David Foy
http://www.bluefire.ca


Mr. Foy,
Any possibility we might see either of these microfilm products on a 120 spool?
Bear in mind that the existing stocks of Tech Pan are due to exhaust in the next
six months.