Overview

The Panasonic Lumix S 40mm F2 is a compact, weather-resistant lens ideal for L-mount cameras like the S9. Optically, it offers smooth bokeh with vintage character and good sharpness, but suffers from noticeable chromatic aberration and flare in strong backlight. Build is lightweight (144g) with AF/MF switch and function button, though autofocus struggles with fast movement. It suits photographers wanting a small, affordable walkaround lens, but those prioritizing character may prefer the 35mm f/1.8.