Originally Posted by TareqPhoto
Do you remember how what is the exposure for that last shot or most of your long shots?
Yes, exactly. Last shot (second picture) - 156 seconds. In a general way, my esposure times are 56s or 156s or 437s with Hitech 10 stop filter (156s or 56s is standard with f8 or f11 at EI25).
exposure time = metered time ^ 1,485 (equation derived from ilford pan f+ reciprocity failure datasheet)