The Truth Behind the Massive Lenses by Sigma

Last year, Sigma achieved the impossible. They managed to get Canon on board with them to create new lenses for their RF mount. This was a huge relief to many since no third-party lenses provide autofocus due to Canon's restriction. Those who used such a lens had to rely entirely on manual focus to get results. This, of course, was a challenge when you think of shooting in high-paced environments. But, we are not going to delve into this today, but rather something that many photographers have b...