philldresser said:Jorge
Excel formula =POWER(A2,1.49) where A2 is the time in secs
Phill
BobF said:
Jorge
I have been told by a reliable source from Ilford that to get the correct exposure on FP4 when under reciprocity failure conditions that you multiply the selected exposure time (in seconds) to the power of 1.49. So if you have a decent scientific calculator or an excel spreadsheet why not create your own table
Excel formula =POWER(A2,1.49) where A2 is the time in secs
Phill
That's a shame, I always enjoyed the posts.Wow this is an old thread. I don't even think that Jorge is doing photography anymore.
Well woodn't you know it.............Wood... get itIt says he's inactive here. Same over at large format forum. I think I recall he gave up photography for carpentry...
...I think I recall he gave up photography for carpentry...
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links. To read our full affiliate disclosure statement please click Here. |
PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY: ![]() |