Sigma's original 30mm f/1.4 for APS-C — the pre-Art predecessor that started Sigma's fast prime reputation.
The Sigma 30mm f/1.4 EX DC HSM is a fast standard prime for Canon EF-mount APS-C (DC), providing 48mm full-frame equivalent perspective. Seven elements in 7 groups. Seven aperture blades. 62mm filter thread. At approximately 430g. 0.40m MFD. HSM autofocus. Pre-Art EX designation.
Seven elements in 7 groups. Eight aperture blades. The 62mm filter thread. At approximately 430g. Minimum focus distance of 0.40m. HSM motor for fast, quiet AF. f/1.4 maximum aperture. DC APS-C image circle (48mm equivalent). Canon EF mount.
The EX DC HSM designation places this lens in Sigma's pre-Art professional APS-C line: the EX (Excellence) tier indicated Sigma's top optical tier before the Art/Sport/Contemporary redesign. The DC (Digital Compact) designation confirms APS-C coverage only. The HSM motor provides fast, quiet AF. The 48mm equivalent provides a natural normal perspective for APS-C.
On the used market the Sigma 30mm f/1.4 EX DC HSM Canon EF is affordable as a vintage APS-C fast prime. Condition checks: HSM AF response, 62mm front element for marks. DC APS-C only. Compatible with Canon EOS EF-S/EF bodies (APS-C only).