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Old 5th July 2018, 02:30 PM
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skellum skellum is offline
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Join Date: Dec 2011
Location: Isle of Lewis
Posts: 1,330
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Well I never.
My phone calculator turns scientific if I use it landscape.
And, the calculator on my PC does tricks I didn't know about.
Thanks Ilford.

I'd actually like little graphs for PanF and HP5. I have one for Fomapan 100, and the generic Ilford one, printed and laminated in my bag.

Will have to join 21st century and give the calculator trick a try. When out and about I do carry a phone, so I have a timer available for long exposures. It's also got a sunrise/sunset app which is handy, but my 'phone is so elderly I can't get The Photographers Ephemeris to run on it.
That is actually really good for planning things like where and when the moon will rise, or at what time of year the sun will set in a given direction.

As for the increased contrast with longer exposures I have run into that with Fomapan, as it has seems to show a precipitous drop off in sensitivity as exposure times stretch. The trick is to be aware, and use it to your advantage. Dim light can be very flat, and choosing a longer exposure can give an apparent boost to contrast.
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