iPhone/iPod touch DOF Calculators:
The subject of iPhone apps for depth-of-field (DOF) calculations came up in another thread, and I thought, "Gee, what a great idea!" So, I went and searched the Apple apps store. Only two DOF calculator apps came up when I searched: "DOF Master" ($1.99), and "Simple DOF Calculator" ($1.99). I first purchased, and downloaded, "Simple DOF Calculator," since it seemed to have the easier data entry interface (rolling selections, like a slot machine). However, the moment I tried it out on my iPod touch, I realized that neither app displays DOF data in inches, just the decimal-equivalent in feet! It's not always immediately obvious, for example, that "0.09 feet" equals 1.08 inches. So, I dug a little deeper, and performed a Google search for iPhone DOF apps, and I found two more:
1. FieldTools (free): a nice "slider" style DOF calculator. Cool thing about this one--it's free!
2. PhotoCalc ($2.99): Top pick! Displays DOF data in feet and inches! Plus, includes some cool, useful extras!
Both, available from the Apple app store. The unique thing about PhotoCalc, as I said, is that it displays DOF info in both feet and inches. It even specifies a circle-of-confusion diameter. Also, PhotoCalc has a HUGE supported camera/formats database. In addition, PhotoCalc also includes a few other neat features that the other calculators don't: a flash guide-number calculator, a solar calculator (sunrise/sunset/twilight times), and a neat little reference section including: a photo terms glossary, a list of "zone system" definitions, the "sunny 16" rule, short-list of film stocks, and basic filter factor data. Kinda everything you need to know, but nothing more (no silly, "how to take better pictures with your new digital camera" tutorials). I love this little app--get it! It's great!
Edited by studio460 - 5/23/10 at 5:16am