Harry Wang, senior director of research for mobile and health at Parks Associates, agrees that the “gap between smartphone camera and DSLR is shrinking,” and that Apple has further narrowed whatever space remains with the software updates it unveiled alongside the iPhone 7 Plus release. While the phone lags behind high-end DSLRs in areas like optical zoom and depth of field, Wang wrote in an email, “users of entry-level DSLR cameras would be thrilled to trade bulkiness for easy-to-carry convenience and editing-on-the-go benefits of a smartphone.”

From the article "Apple’s Aim Is on the Camera Market" by Jordan G. Teicher.