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2015-033 AlchemyPinhole cameras are more alchemy than science.I went prowling on-line today for pinhole exposure calculators, having had a series of badly under and overexposed shots. By rights one ought to be able to compute the f-stop by dividing the effective focal length--the distance from the pinhole to the film--by the diameter of the pinhole and work from there. Unfortunately, the relationships are not linear as exposure times get past a second or two and one has to throw in a "reciprocity-failure" multiplier for longer exposures. Fudge factors rule!I printed the charts and tucked them into my little book, which will now have to do double duty as journal and exposure record. It will henceforth be the alchemist's journal.I found a reciprocity fudge factor chart at http://www.instructables.com/id/Design-and-Build-your-own-Pinhole-Camera/step9/Loading-and-Shooting/I found an exposure calculator at http://www.mrpinhole.com/exposure.phpToday's prompt from http://writealm.com/february-prompts/
2015-032 CrystallizeIt crystallized this morning - the more I do the less I get done. The more I scurry about doing this and doing that, the less I accomplish, the less attention I pay to doing and being what really matters. Specifically, the more I consume myself with the business of photography-related stuff the less real photography I do.It is easy to burn up time and energy with activity. It's succumbing to the tyranny of the urgent, as wiser folk than I have called it.During Lent we will be reading together Scot McKnight's "40 Days Living the Jesus Creed." The book is based on Jesus' reply to the teacher of the law recorded in Mark 12:28ff.One of the teachers of the law came and heard them debating. Noticing that Jesus had given them a good answer, he asked him, “Of all the commandments, which is the most important?”“The most important one,” answered Jesus, “is this: ‘Hear, O Israel: The Lord our God, the Lord is one. Love the Lord your God with all your heart