yes most lenses can be adapted to canon and the minolta is at the end
although the distance between the lens and sensore in canon is a little longer you can make the conversion by shaving off the minolta mount ( .28mm )
there is a guy over at fredmiranda ( camera forum ) that will do it for you
(
http://www.jimbuchananspace.com/Camera_Services.html )
it is not the mainly the size of the mount but the distance from the sensore
see chart
Leica M (rangefinder): 27.95mm
Canon FD: 42mm
Minolta MD: 43.72mm
Canon EOS: 44mm
Sony Alpha: 44.6mm
M42 (Pentax Screwmount): 45.46mm
Pentax K: 45.46mm
Contax/Yashica (CY): 45.5mm
Olympus OM: 46mm
Nikon F : 46.5mm
Leica R (SLR): 47mm
Contax N: 48mm
Mamiya 645: 63.3mm