I realize that I shouldn't even be here considering my use of photography(snapshots of family, holidays, travel), but I thought the knowledgeable people here could help.
For years I used an EOS 10S and lenses. When I decided to upgrade to digital, I bought an EOS Rebel XSi, thinking that those lenses would work with the digital. NOT! They do not autofocus correctly. All photographs are slightly out of focus. The lenses are a 35mm-135mm f4-5.6 and a 100mm-300mm f4.5-5.6. The 100-300 is better than the 35-135. I have worked around it foe a couple of years but am no longer satisfied.
Is my only recourse to buy new lenses for the Rebel XSi or am I missing something.