Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
Sigma18-300 F/3.5-6.3 DC Macro OS HSM | C	PENTAX K	Macro	—	18-300mm	f/3.5	—
Sigma18-300mm F/3.5-6.3 DC Macro [OS] HSM | C	PENTAX K	Macro	—	18-300mm	f/3.5	—
Sigma18-300mm F/3.5-6.3 DC Macro HSM | C	PENTAX K	Macro	—	18-300mm	f/3.5	—
Sigma18-35mm F/1.8 DC HSM | A	PENTAX K	Wide	—	18-35mm	f/1.8	—
Sigma18-35mm F/1.8 DC HSM Art	PENTAX K	Wide	—	18-35mm	f/1.8	810g
Sigma18-35mm F/3.5-4.5 ASPH ZEN	PENTAX K	Wide	—	18-35mm	f/3.5	—
Sigma18-50mm F/2.8 EX DC	PENTAX K	Zoom	—	18-50mm	f/2.8	—
Sigma18-50mm F/2.8 EX DC Macro	PENTAX K	Macro	—	18-50mm	f/2.8	—
Sigma18-50mm F/2.8-4.5 DC OS HSM	PENTAX K	Zoom	—	18-50mm	f/2.8	395g
Sigma18-50mm F/3.5-5.6 DC	PENTAX K	Zoom	—	18-50mm	f/3.5	—
Sigma180mm F/3.5 APO EX DG [HSM] Macro	PENTAX K	Macro	—	180mm	f/3.5	—
Sigma180mm F/3.5 APO EX DG Macro	PENTAX K	Macro	—	180mm	f/3.5	—
Sigma180mm F/3.5 APO EX IF [HSM] Macro	PENTAX K	Macro	—	180mm	f/3.5	—
Sigma180mm F/3.5 APO EX IF Macro	PENTAX K	Macro	—	180mm	f/3.5	—
Sigma180mm F/5.6 APO Macro UC	PENTAX K	Macro	—	180mm	f/5.6	—
Sigma20-40mm F/2.8 EX DG ASPH IF	PENTAX K	Zoom	—	20-40mm	f/2.8	—
Sigma20mm F/1.8 EX DG ASPH RF	PENTAX K	Wide	—	20mm	f/1.8	520g
Sigma21-35mm F/3.5-4.2	PENTAX K	Wide	—	21-35mm	f/3.5	—
Sigma24-135mm F/2.8-4.5	PENTAX K	Zoom	—	24-135mm	f/2.8	—
Sigma24-50mm F/4-5.6 UC ZEN	PENTAX K	Zoom	—	24-50mm	f/4	—
Sigma24-60mm F/2.8 EX DG	PENTAX K	Zoom	—	24-60mm	f/2.8	—
Sigma24-70mm F/2.8 EX DG ASPH DF	PENTAX K	Zoom	—	24-70mm	f/2.8	—
Sigma24-70mm F/2.8 EX DG HSM	PENTAX K	Zoom	—	24-70mm	f/2.8	790g
Sigma24-70mm F/2.8 EX DG IF HSM	PENTAX K	Zoom	—	24-70mm	f/2.8	—
Sigma24-70mm F/2.8 EX DG Macro	PENTAX K	Macro	—	24-70mm	f/2.8	715g
Sigma24-70mm F/3.5-5.6 ASPH HF	PENTAX K	Zoom	—	24-70mm	f/3.5	—
Sigma24-70mm F/3.5-5.6 ASPH UC ZEN	PENTAX K	Zoom	—	24-70mm	f/3.5	—
Sigma24-70mm F/3.5-5.6 UC	PENTAX K	Zoom	—	24-70mm	f/3.5	—