Q: How does Image Capture work

I've lost my 9.2 iphoto because of OSX Mavericks needing 9.5 version of iphoto.  I had to deinstall OSX Mavericks and reinstall Mountain Lion 10.8.5.  With no old versiion of iphoto available I'm trying to gain the knowledge of how Image Capture works.

Any input would be appreciated, thanks!