Sigma's compact Art-line normal prime for mirrorless — 45mm equiv on APS-C at f/2.8, pre-DN Art.
The Sigma 30mm f/2.8 EX DN is an earlier compact prime for APS-C mirrorless — predating the DN Art designation. Providing 45mm equivalent on Sony E-mount, it offered Sigma's quality in a compact mirrorless-native design.
Optically good — similar to the later DN Art version. Sharp from f/4. The EX designation (later replaced by Art) indicates quality construction. Linear motor AF. The 45mm equivalent is a classic normal perspective.
Sony E mount with 46mm filter thread. Approximately 130g — incredibly compact. No weather sealing. APS-C coverage. Minimum focus distance 30cm. The EX DN designation predated the Art branding.
Available used very cheaply. The 30mm f/2.8 DN Art (ID 1071) replaced this with updated branding — optically very similar. For budget APS-C mirrorless users wanting a compact normal prime. Check if this is effectively a duplicate of ID 1071.