Welcome on pyfocus web site
PyFocus is based on libgphoto2 librairy. So, all digital camera accepted by it will be recognize on pyfocus.
Note that "capture" on EOS reflex needs 2 things : -* libgphoto2 version >= 2.4 -* Canon EOS protocol on "PC Connexion" (not PTP)
PyFocus allow you to download only last took picture.
Pyfocus allow you to make a zoom where you want on picture.
You need Hartmann disk or other such things to make great focus.