Efke KB25 + pyro

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

F?dor Pavlovic' - 25 Feb 2004 14:04 GMT

I'm testing Efke KB 25 + pyro, esposed at 12 iso, sometime I need long
expositions time, but I'haven't found data for reprocity failure of this
Film.
In your experience the data of APX 25 is similar ?

Regards

Lorenzo

Reply to this Message

Gregory W Blank - 25 Feb 2004 16:01 GMT

> I'm testing Efke KB 25 + pyro, esposed at 12 iso, sometime I need long
> expositions time, but I'haven't found data for reprocity failure of this
> Film.
> In your experience the data of APX 25 is similar ?
> Regards
> Lorenzo

Define long exposure time, in normal outdoor
applications I found the film to perform very well
at 25 ASA/ISO using Pyro,....no adjustment
for reciprocity within 1to 2 second exposure
time.

Signature

LF website http://members.bellatlantic.net/~gblank

Reply to this Message

F?dor Pavlovic' - 26 Feb 2004 13:44 GMT

> > I'm testing Efke KB 25 + pyro, esposed at 12 iso, sometime I need long
> > expositions time, but I'haven't found data for reprocity failure of this
[quoted text clipped - 8 lines]
> for reciprocity within 1to 2 second exposure
> time.

ok, but in a winter dark day (cloudy), 12 ISO at F22 (macro using Hasselbad
planar 80 + 16 mm tube) and green fliter I need 10-15 seconds.

Reply to this Message

Gregory W Blank - 26 Feb 2004 17:39 GMT

> ok, but in a winter dark day (cloudy), 12 ISO at F22 (macro using Hasselbad
> planar 80 + 16 mm tube) and green fliter I need 10-15 seconds.

My rule is that for such an exposure to try doubling the exposure.

Signature

LF website http://members.bellatlantic.net/~gblank

Reply to this Message

Norman Worth - 08 Mar 2004 00:25 GMT

Reciprocity?

> > > I'm testing Efke KB 25 + pyro, esposed at 12 iso, sometime I need long
> > > expositions time, but I'haven't found data for reprocity failure of this
[quoted text clipped - 11 lines]
> ok, but in a winter dark day (cloudy), 12 ISO at F22 (macro using Hasselbad
> planar 80 + 16 mm tube) and green fliter I need 10-15 seconds.

Reply to this Message