Pentax K Lenses that have Sigma OS image stabilization

"This is a solid lens. I'm not 100% convinced the OS in this lens is an improvement over the body image stabilization, but it seems to be roughly equivalent."

	Image stabilization	Sigma OS			Focus motor	Sigma HSM
	Zoom range	2.8x			Max focal length	50 mm
	Fixed aperture	No			Min focal length	18 mm
	Weight	395 g			Aperture	f/2.8

"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."

	Image stabilization	Sigma OS			Focus motor	Sigma HSM
	Zoom range	4x			Max focal length	200 mm
	Fixed aperture	No			Min focal length	50 mm
	Weight	n/a			Aperture	f/4

"I gave it 5 stars based on what I would expect from a zoom lens and the image quality is really quite impressive for a super zoom; better than anything else of this type that I've seen. It is a good, solid, well made lens and I couldn't be happier with it."

Great zoom range 13.9x

	Image stabilization	Sigma OS			Focus motor	Sigma HSM
	Zoom range	13.9x			Max focal length	250 mm
	Fixed aperture	No			Min focal length	18 mm
	Weight	0.6 kg			Aperture	f/3.5

"The is a great upgrade from a kit lens. Good focal length range, speed and macro ability."

	Image stabilization	Sigma OS			Focus motor	Sigma HSM
	Zoom range	4.1x			Max focal length	70 mm
	Fixed aperture	No			Min focal length	17 mm
	Weight	0.5 kg			Aperture	f/2.8

"Lens has excellent speed and sharpness."

	Image stabilization	Sigma OS			Focus motor	Sigma HSM
	Zoom range	6.9x			Max focal length	125 mm
	Fixed aperture	No			Min focal length	18 mm
	Weight	0.5 kg			Aperture	f/3.8

"I use this lense on my Pentax K20D camera and it works excellent. "

	Image stabilization	Sigma OS			Focus motor	None
	Zoom range	4.3x			Max focal length	300 mm
	Fixed aperture	No			Min focal length	70 mm
	Weight	0.6 kg			Aperture	f/4