Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
Sigma150-500mm F/5-6.3 DG OS HSM	PENTAX K	Telephoto	—	150-500mm	f/5	1780g
Sigma15mm F/2.8 EX DG Diagonal Fisheye	PENTAX K	Fisheye	—	15mm	f/2.8	370g
Sigma15mm F/2.8 EX DG Fisheye	PENTAX K	Fisheye	—	15mm	f/2.8	—
Sigma15mm F/2.8 EX Fisheye	PENTAX K	Fisheye	—	15mm	f/2.8	—
Sigma17-35mm F/2.8-4 EX ASPH	PENTAX K	Wide	—	17-35mm	f/2.8	—
Sigma17-35mm F/2.8-4 EX ASPH [HSM]	PENTAX K	Wide	—	17-35mm	f/2.8	—
Sigma17-35mm F/2.8-4 EX DG	PENTAX K	Wide	—	17-35mm	f/2.8	—
Sigma17-35mm F/2.8-4 EX DG [HSM]	PENTAX K	Wide	—	17-35mm	f/2.8	—
Sigma17-50mm F/2.8 EX DC HSM	PENTAX K	Zoom	—	17-50mm	f/2.8	—
Sigma17-50mm F/2.8 EX DC OS HSM	PENTAX K	Zoom	—	17-50mm	f/2.8	565g
Sigma17-70mm F/2.8-4 DC Macro HSM | C	PENTAX K	Macro	—	17-70mm	f/2.8	—
Sigma17-70mm F/2.8-4 DC Macro OS HSM	PENTAX K	Macro	—	17-70mm	f/2.8	520g
Sigma17-70mm F/2.8-4 DC Macro OS HSM | C	PENTAX K	Macro	—	17-70mm	f/2.8	465g
Sigma17-70mm F/2.8-4.5 DC Macro	PENTAX K	Macro	—	17-70mm	f/2.8	—
Sigma170-500mm F/5-6.3 APO DG	PENTAX K	Telephoto	—	170-500mm	f/5	—
Sigma170-500mm F/5-6.3 APO RF ZEN	PENTAX K	Telephoto	—	170-500mm	f/5	—
Sigma18-125mm F/3.5-5.6 DC	PENTAX K	Zoom	—	18-125mm	f/3.5	—
Sigma18-125mm F/3.8-5.6 DC [OS] HSM	PENTAX K	Zoom	—	18-125mm	f/3.8	—
Sigma18-125mm F/3.8-5.6 DC HSM	PENTAX K	Zoom	—	18-125mm	f/3.8	490g
Sigma18-200mm F/3.5-6.3 DC	PENTAX K	Zoom	—	18-200mm	f/3.5	405g
Sigma18-200mm F/3.5-6.3 DC HSM II	PENTAX K	Zoom	—	18-200mm	f/3.5	—
Sigma18-200mm F/3.5-6.3 DC Macro HSM | C	PENTAX K	Macro	—	18-200mm	f/3.5	—
Sigma18-200mm F/3.5-6.3 DC Macro OS HSM | C	PENTAX K	Macro	—	18-200mm	f/3.5	430g
Sigma18-200mm F/3.5-6.3 DC OS HSM	PENTAX K	Zoom	—	18-200mm	f/3.5	—
Sigma18-200mm F/3.5-6.3 II DC OS HSM	PENTAX K	Zoom	—	18-200mm	f/3.5	490g
Sigma18-250mm F/3.5-6.3 DC Macro HSM	PENTAX K	Macro	—	18-250mm	f/3.5	—
Sigma18-250mm F/3.5-6.3 DC Macro OS HSM	PENTAX K	Macro	—	18-250mm	f/3.5	470g
Sigma18-250mm F/3.5-6.3 DC OS HSM	PENTAX K	Zoom	—	18-250mm	f/3.5	628g