Wide angle lenses that have Sigma OS image stabilization, have a Sigma HSM focus motor and have a f/2.8 or faster aperture

"One of the main pros of these lens is the AF system – fast and acurate."

Fixed aperture The same aperture at all focal lengths

	Aperture	f/2.8			Zoom range	2.9x
	Image stabilization	Sigma OS			Weight	0.6 kg
	Focus motor	Sigma HSM			Max focal length	50 mm
	Fixed aperture	Yes			Min focal length	17 mm

"Sigma's new Optical Stabilizer is very effective. Focus is pretty much instantaneous, and silent."

Fixed aperture The same aperture at all focal lengths

	Aperture	f/2.8			Zoom range	2.9x
	Image stabilization	Sigma OS			Weight	0.6 kg
	Focus motor	Sigma HSM			Max focal length	50 mm
	Fixed aperture	Yes			Min focal length	17 mm

"Amazing very nice lens."

Fixed aperture The same aperture at all focal lengths

	Aperture	f/2.8			Zoom range	2.9x
	Image stabilization	Sigma OS			Weight	0.6 kg
	Focus motor	Sigma HSM			Max focal length	50 mm
	Fixed aperture	Yes			Min focal length	17 mm

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

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

"This lens is really great. The picture quality is awsome. It can make great proxy. I've shot a picture of a spider and i can see the hair over his eyes."

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

"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."

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

"Use in everyday photography, fast focusing and great quality pictures."

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

"It's SUPER quiet and love that it comes with a hood and has a metal mount. Very durable and nice lens."

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

"This is great for a beginner's lens, fast focus and clear. Not too heavy."

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