I only have four Sigma lenses:
150-500mm HSM ETC. Relatively new
300mm f4 I don't know how old
75-200 f2.8 - 3.5 I don't know how old
400mm f5.6 Really old, light grey


All work on the A77.

The 75-200 and 400 are not recognized on the A700.

Oh, well, weird things with Sigma lenses are common knowledge.

Phil