Overview

The Vivitar 400mm f/5.6 (Komine) is a heavy, all-metal manual focus lens with a built-in tripod collar, requiring a sturdy tripod. Optically, it is soft even at f/8-f/11, but sharpening in post can yield acceptable results for mobile viewing. It suits budget-conscious nature photographers who can manage its weight and manual operation, and who don't need critical sharpness.