Canon EOS 50D Lenses that have Sigma OS image stabilization and have a f/2.8 or faster aperture

"The zoom is smooth once you get the handle of it, and its low light capability is excellent considering the price."

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

"Consistent output, fast/accurate auto-focus, nice bokeh, strong construction."

	Aperture	f/2.8			Focus motor	Sigma HSM
	Image stabilization	Sigma OS			Max focal length	200 mm
	Fixed aperture	Yes			Min focal length	70 mm
	Weight	1.4 kg			Zoom range	2.9x

"Very bright optics, fast auto focus, beautiful soft bokeh, built like a tank, and a great low light lens."

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

"I like the lense. It is a great walk around lense which is light and fast enough for situations where other lenses fail. I used to have the 17-85mm EF-S Canon lense before and was looking for a faster alternative that is having a good wide ancle"

	Aperture	f/2.8			Focus motor	Sigma HSM
	Image stabilization	Sigma OS			Max focal length	70 mm
	Fixed aperture	No			Min focal length	17 mm
	Weight	465 g			Zoom range	4.1x