Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
Sigma24mm F/1.8 EX DG ASP Macro	PENTAX K	Macro	—	24mm	f/1.8	—
Sigma24mm F/1.8 EX DG ASPH Macro	PENTAX K	Macro	—	24mm	f/1.8	485g
Sigma28-105mm F/2.8-4 ASPH ZEN	PENTAX K	Zoom	—	28-105mm	f/2.8	—
Sigma28-105mm F/2.8-4 DG	PENTAX K	Zoom	—	28-105mm	f/2.8	—
Sigma28-105mm F/3.8-5.6 ASPH IF UC-III ZEN	PENTAX K	Zoom	—	28-105mm	f/3.8	—
Sigma28-105mm F/4-5.6 UC ZEN	PENTAX K	Zoom	—	28-105mm	f/4	—
Sigma28-105mm F/4-5.6 UC-II ZEN	PENTAX K	Zoom	—	28-105mm	f/4	—
Sigma28-135mm F/3.8-5.6 ASPH IF Macro	PENTAX K	Macro	—	28-135mm	f/3.8	—
Sigma28-200mm F/3.5-5.6 DG Macro	PENTAX K	Macro	—	28-200mm	f/3.5	—
Sigma28-200mm F/3.8-5.6	PENTAX K	Zoom	—	28-200mm	f/3.8	—
Sigma28-200mm F/3.8-5.6 ASPH UC ZEN	PENTAX K	Zoom	—	28-200mm	f/3.8	—
Sigma28-300mm F/3.5-6.3 DG Macro	PENTAX K	Macro	—	28-300mm	f/3.5	—
Sigma28-300mm F/3.5-6.3 Macro	PENTAX K	Macro	—	28-300mm	f/3.5	—
Sigma28-70mm F/2.8	PENTAX K	Zoom	—	28-70mm	f/2.8	—
Sigma28-70mm F/2.8 EX ASPH	PENTAX K	Zoom	—	28-70mm	f/2.8	—
Sigma28-70mm F/2.8 EX ASPH DF	PENTAX K	Zoom	—	28-70mm	f/2.8	—
Sigma28-70mm F/2.8 EX DG	PENTAX K	Zoom	—	28-70mm	f/2.8	—
Sigma28-70mm F/2.8-4	PENTAX K	Zoom	—	28-70mm	f/2.8	—
Sigma28-70mm F/2.8-4 DG	PENTAX K	Zoom	—	28-70mm	f/2.8	—
Sigma28-70mm F/2.8-4 UC	PENTAX K	Zoom	—	28-70mm	f/2.8	—
Sigma28-70mm F/2.8-4 UC ZEN	PENTAX K	Zoom	—	28-70mm	f/2.8	—
Sigma28-70mm F/3.5-4.5	PENTAX K	Zoom	—	28-70mm	f/3.5	—
Sigma28-70mm F/3.5-4.5 IA ZEN	PENTAX K	Zoom	—	28-70mm	f/3.5	—
Sigma28-70mm F/3.5-4.5 UC ZEN	PENTAX K	Zoom	—	28-70mm	f/3.5	—
Sigma28-80mm F/3.5-5.6 ASPH Macro	PENTAX K	Macro	—	28-80mm	f/3.5	—
Sigma28-80mm F/3.5-5.6 ASPH Macro HF	PENTAX K	Macro	—	28-80mm	f/3.5	—
Sigma28-80mm F/3.5-5.6 ASPH Macro II	PENTAX K	Macro	—	28-80mm	f/3.5	—
Sigma28-80mm F/3.5-5.6 II ASPH MINI ZOOM Macro	PENTAX K	Macro	—	28-80mm	f/3.5	—