Quote Originally Posted by TareqPhoto View Post
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)