Pentax K Lenses made by Sigma

"This is a great all aroud lens. Love the wide angle I get and just enough zoom for an alround."

More advanced image stabilization Sigma OS

	Zoom range	4.1x			Focus motor	Sigma HSM
	Fixed aperture	No			Aperture	f/2.8
	Image stabilization	Sigma OS			Length	83 mm
	Max focal length	70 mm			Weight	0.5 kg

"I use the lens for landscape and wildlife photography. Love the fast quiet autofocus and very sharp image quality."

Fixed aperture The same aperture at all focal lengths

	Zoom range	2.9x			Focus motor	Sigma HSM
	Fixed aperture	Yes			Aperture	f/2.8
	Image stabilization	None			Length	184 mm
	Max focal length	200 mm			Weight	1.4 kg

"I have been very satisfied: this lens is absolutely great for low light, or portraiture, requiring large apertures. I shoot with a Pentax k-x, non full-frame, and so the focal length is closer to 85 mm, perfect for portraits."

Wide aperture f/1.4

	Zoom range	1x			Focus motor	Sigma HSM
	Fixed aperture	n/a			Aperture	f/1.4
	Image stabilization	None			Length	68 mm
	Max focal length	50 mm			Weight	0.5 kg

"Well built, nicely damped MF, fast accurate AF, acceptably sharp wide open, even better at F/4, and really pleasing bokeh."

Fixed aperture The same aperture at all focal lengths

	Zoom range	3x			Focus motor	Sigma HSM
	Fixed aperture	Yes			Aperture	f/2.8
	Image stabilization	None			Length	135 mm
	Max focal length	150 mm			Weight	0.8 kg

"Lens has excellent speed and sharpness."

More advanced image stabilization Sigma OS

Great zoom range 6.9x

	Zoom range	6.9x			Focus motor	Sigma HSM
	Fixed aperture	No			Aperture	f/3.8
	Image stabilization	Sigma OS			Length	n/a
	Max focal length	125 mm			Weight	0.5 kg

"Excellent clarity with good built in features. While the lens could be a little faster, it works in most situations and the price is also excellent. Highly recommended."

Great zoom range 13.9x

More advanced image stabilization Sigma OS

Great telephoto lens 250 mm

	Zoom range	13.9x			Focus motor	Sigma HSM
	Fixed aperture	No			Aperture	f/3.5
	Image stabilization	Sigma OS			Length	n/a
	Max focal length	250 mm			Weight	0.6 kg

"I am shooting through this lens, and I am loving the results. I really haven't had any complaints about it and it has performed as described."

More advanced image stabilization Sigma OS

	Zoom range	4x			Focus motor	Sigma HSM
	Fixed aperture	No			Aperture	f/4
	Image stabilization	Sigma OS			Length	102 mm
	Max focal length	200 mm			Weight	n/a

"Very fast – and impressive sharpness even with large aperture settings. Excellent bokeh, minimal chromatic aberrations, beautiful colors, very pleasing images."

	Zoom range	1x			Focus motor	None
	Fixed aperture	n/a			Aperture	f/2.8
	Image stabilization	None			Length	95 mm
	Max focal length	105 mm			Weight	450 g

"I use this lens constantly and have nothing but praise for the quality and uses for this lens. I can capture the macro shot I want and also the group of 15 kids posing at drama school"

	Zoom range	1x			Focus motor	None
	Fixed aperture	n/a			Aperture	f/2.8
	Image stabilization	None			Length	64 mm
	Max focal length	50 mm			Weight	315 g