Sigma's compact wide-angle for MFT — the 19mm f/2.8 DN Art for Micro Four Thirds.
The Sigma 19mm f/2.8 EX DN Art is a compact wide-angle prime for Micro Four Thirds, providing a 38mm equivalent normal-wide perspective. Part of Sigma's DN series designed for mirrorless, the Art branding indicates quality optics in a compact form. At f/2.8, it provides a useful everyday prime for MFT shooters wanting a step up from kit zooms.
Optical performance is good for the compact size and price. Sharpness is respectable from f/2.8 and very good by f/4. The Art quality in a tiny package. The 38mm equivalent is a versatile perspective — slightly wider than normal, ideal for street and documentary. Linear motor AF is quiet. Chromatic aberration is well-controlled.
Micro Four Thirds mount. Filter thread is 46mm — very compact. Weight is approximately 145 grams — extremely light. Build quality is decent with a metal mount. No weather sealing. The DN Art primes provide excellent quality-per-gram. Also available in Sony E mount. No image stabilisation — relies on body IBIS.
Very affordable on the used market. Check AF operation. An excellent compact prime for MFT at budget pricing. The 38mm equivalent is a versatile everyday perspective. The Art quality in such a tiny package is impressive. The Olympus 17mm f/1.8 is faster and has better AF at higher cost.