Long exposure calculator

[Gaz J]

Just thought I'd post this for interest. For those who use filters like the Lee Big Stopper this is a nifty app for an iPhone. And it's free.

HPR LongTime Exposure Calculator.

Saves a few brain cells.

 

[hollis_f]

I count clicks. I meter without the filter, then adjust parameters in manual mode. If I want 10 stops then that's 10 clicks for ISO, or 20 clicks for SS and/or aperture (30 if you have adjustement set to 1/3 stop).