reciprocity failure with Neopan 100 Acros

[mdohoney]

I want to use Fujifilm Neopan 100 Acros with long pinhole exposures. The online calculator I use doesn't have data for this film. Where can I find information? My pinhole is f200.
Thanks

 

[rbarker]

Take a look at:

http://www.fujifilm.com/JSP/fuji/epartners/bin/NeopanAcros100.pdf

it says no adjustment is required for exposures up to 120 seconds, and +1/2 stop for exposures between 120 and 1000 seconds.

 

[mdohoney]

Thank you!

 

[dogzbum]

Can I also suggest checking out the FREE PinholeDesigner tool?
http://www.pinhole.cz/en/pinholedesigner/
This calculates reciprocity for a range of films.
For 100ACROS I used this tool to output times without adjusting for film then doubled the exposuretimes for metered times 120sec or more!!

 

[mdohoney]

Thanks again! It's a great tool. I'll try what you suggest. I have so much to learn!