Eos Adapter
There is an adapter for Sigma DL Macro Super availabe A 70-300mm Canon EOS XTi 400D/Rebel?

There is an adapter for Sigma DL Macro Super availabe A 70-300mm Canon 400D/Rebel EOS XTi? Please help. I have this super macro lens Sigma DL 70-300mm, but can not fit Canon EOS 400D. Do you think there is an adapter or converter available for this?

There probably is that if you look around. First you need to know what your lens mount is made to Sigma. For example, you can probably find an adapter Canon Nikon mount to a hill. Note however that the autofocus and metering will probably not work. I suggest selling the lens and the purchase of a target Canon.