GroupCalc is a rather specialized app to help photographers who photograph large groups of people. It includes two calculators:
You can download the free version (or preferably the paid version ;^)) from the Google Play store
https://play.google.com/store/search?q=GroupCalc
I'm currently working on an iOS version of the app.
Hugh
- Big Stands Calculator which is used when photographing groups of up to 400 people in rows on tiered stands.
- Keystone Calculator which is used when photographing a large groups of up to 9,999 people in an open area with the camera in an elevated position. For example whole school photos. This calculates the shape and size of the area required, allowing for keystone distortion and the number of people in the photo.
You can download the free version (or preferably the paid version ;^)) from the Google Play store
https://play.google.com/store/search?q=GroupCalc
I'm currently working on an iOS version of the app.
Hugh