I have been enjoying doing still lifes on a table top with misc. subjects and wa s wondering about staying with a very small aperature. For instance; If I am at f/64 and I find I need a 1 sec. exposure the film I am using recomends adj. to 2 secs. for reciprocity. I am also doing 1:1 so I would have to allow for belows compensation which would be two full stops and that would put me at f/32. The qu estion is how do I keep at f/64? I noticed that the reciprocity factor doesn't f ollow a doubling sequence as do asa/fstops/shutter speeds. I hope I have explain ed this correctly and someone could help. Thank you in advance!