What We Like
+Exceptional build quality with all-metal construction and premium materials
+Outstanding value compared to Leica equivalents (costs ~10% of Leica Summilux 28mm f/1.4)
+Excellent optical performance with strong bokeh and 3D pop characteristic
+Compact and lightweight for a fast 28mm lens, ideal for travel photography
+Available in multiple mount options expanding accessibility beyond M-mount
+Smooth manual focus ring and premium feel with tactile feedback
Worth Knowing
−No autofocus or electronic contacts limits compatibility with modern cameras
−Optimized for Leica's thin filter stack; performance degrades on Sony/thicker filter stack cameras
−Not weather sealed, vulnerable to dust and fungal growth in humid conditions
−Infinity focus lock mechanism can be awkward and requires pinky engagement when focusing
−Soft corners and subdued contrast at wide open f/1.4; best results from f/2.8 onward
−Flare issues in contre-light scenes and LoCA/bokeh fringing at close focus distances