On-line Depth of Field Calculator

[Lindenberg]

I ran across a handy on-line Depth of field calculator that can be used with the GH1.
http://www.dofmaster.com/dofjs.html

 

[Soldier]

I downloaded an application for my android phone which looks pretty good. It's called Photo Tools

http://www.androidzoom.com/android_applications/tools/photo-tools_gjkm.html

 

[EDP]

there 10000 tools now available for intelligent phones

but nice when you don't have one around