APS-C-format DSLR kit lens upgrade

摘要

MOST APS-C-format DSLRs, especially consumer models, come packaged with a lens, usually a standard 18-55mm f/3.5-5.6 zoom. This lens is supposed to be a starting point for those venturing into the world of DSLR photography, so obviously it won't be the best-quality lens in the manufacturer's range.