Sigma's compact wide prime for APS-C — same as ID 1459, possible earlier branding.
The Sigma 19mm f/2.8 DN appears to be the same lens as ID 719 or 1459 — Sigma's compact wide prime for APS-C mirrorless without the Art or EX designation. Check for duplicate entries — the DN designation is consistent.
Same basic specification — 28.5-29mm equivalent on APS-C at f/2.8 in compact near-pancake dimensions. Linear motor AF. The pre-Art DN and later Art DN may be identical or slightly different cosmetically.
Sony E mount with 46mm filter thread. Approximately 130-160g depending on version. No weather sealing. APS-C coverage. Compact design. Same optical concept across versions.
Check against IDs 719 and 1459 for duplicate. Available used very cheaply. The Sigma 16mm f/1.4 DC DN is much better. See earlier entries for complete details.