Photo Booth Upload's "DSLR" camera option uses exclusively Canon cameras. But which Canon cameras can be used?

For the DSLR option in Camera settings (which, despite its name supports a number of mirrorless Canon model, as well), Photo Booth Upload is currently using the CANON EDSDK version 13.18.0.  

For a list of cameras which can be used with this version, see the appropriate column of the spreadsheet available here - on Canon's website.