A few weeks ago I wrote an Android App that I felt I needed myself when I was out and about in the field photographing. I’m glad that it has now
almost 100 more than 220 installs. As you are well aware of, most films do need correcting for reciprocity failure to avoid underexposing your negatives for exposure times of over a second. This really gets important for Large Format or pinhole photography, and also for night photography of course.
Until now I had a folder with a few printed PDFs with tables of exposure correction information for the different films that I regularly use. I kept the folder in my camera bag where I had to replace the prints regularly due to wind, rain and other damage; an App on a phone you’re already carrying is of course easier to use.
As a bonus, in the Reciprocity App I could also include the findings of Howard Bond from his article in the Photo Technique magazine which had been formulated into an easy formula by Patrick Gainer.
It is a simple App, but packed with the reciprocity details of most black and white films currently being sold. Works fine on my Android phone as well as on my Android tablet. All information is contained in the App so no data connection is needed when you’re on a photo shoot abroad, on top of a mountain or in the deep countryside without any connectivity. It’s free, make sure to grab it!
As for an iOS version for Apple devices, I don’t have the possibility to develop an iOS App and you are probably better off with an Android device anyway. 😀