how to expose acros in the moonlight...

[chris77]

topic says it all, maybe somebody has experience and is willing to share.
can someone give an idea of how long to expose acros (for condenser) under full moon light.
i know it all depends - but i am just looking for a rough figure as a starting point.

thanks, very much appreciated..

 

[bvy]

The "rule" seems to be 18 more stops than Sunny 16. That's your baseline. Then you need to consider reciprocity failure -- something Acros is known to handle better than other films, but even it has its limitations.

 

[Sirius Glass]

I have use the Jiffy calculator with great success.

http://f-sunny.com/night-exposures-in-a-jiffy/
http://www.veronaschools.org/cms/lib02/NJ01001379/Centricity/Domain/53/Jiffy Calc Page 1.pdf​

 

[chris77]

interesting.. thank you both!

 

[pdeeh]

well, if you know the luminance of the moon , you can work out exactly what your exposure should be, a la The Blessed Ansel*






*p.127 of The Negative in the 1984 NYGS edition