Bill,
All the information about this app can be found here:
Alpa eFinder AppIt is of course for any back (resp. sensor sizes). Some of the included functions in the Alpa efinder:
★ save pictures with multiple masks and GPS coordinates
★ use original formats as well as overlays with other aspect ratios
★ prepare and use up to 4 different cameras
★ use semi-transparent gray masks for frames just by tapping
★ use autofocus & auto-exposure with iPhone 3GS, 4, iPod touch
Thierry
This app that lets you use an iPhone as a viewfinder, is that for any lens, any digital back? Do they work
with an iPad?