[APML] Fuji Provia 400F and exposure time

[centaurus_a@virgilio.it]

Dear all,

I always sticked to the rule of thumb of the square of the f/ratio for a
400 ASA film, but I was wondering if, on a top of a mountain (1900 meters
a.s.l.) with clear sky it would be better to push the esposure a bit more
of , let's say 1.5 times...especially with Provia 400F which I don't know
if it's reciprocity failure is much higher than, for instance, E200.
Unfortunately I go to this place only once a year and I don't want to "waste"
time in sky fog testing so I need a good estimate beforehand.

Any opinions?

Regards,
Nicola
http://astrofoto.laza.it

_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo