Sigma APO 70-300mm f/4-5.6 DG MARCO
or
AF 70-300mm F/4-5.6 Di LD Macro
which is better between these two lens?
and what does DG, DI, LD stands for?
or
AF 70-300mm F/4-5.6 Di LD Macro
which is better between these two lens?
and what does DG, DI, LD stands for?