Canon EOS 550D Lenses that have Sigma OS image stabilization and have a focus motor

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

Fixed aperture The same aperture at all focal lengths

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

"The OS works incredibly well and perhaps I got a great copy, but it is sharp wide open."

Fixed aperture The same aperture at all focal lengths

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

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

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

"Love the wide range of focal length from 50 to 500mm. I find the quality of the photos at all focal lengths to be very crisp and in focus."

Great telephoto lens 500 mm

Great zoom range 10x

	Image stabilization	Sigma OS			Zoom range	10x
	Focus motor	Sigma HSM			Aperture	f/4.5
	Fixed aperture	No			Length	219 mm
	Max focal length	500 mm			Weight	2 kg

"Very good picture quality (especially at f/8 and smaller) and optical stabilization. "

Great telephoto lens 400 mm

	Image stabilization	Sigma OS			Zoom range	3.3x
	Focus motor	Sigma HSM			Aperture	f/4.5
	Fixed aperture	No			Length	204 mm
	Max focal length	400 mm			Weight	1.7 kg

"Great for close ups of action (sports), wildlife and portraits."

Quite short 102 mm

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

"I was looking for a lens with a better focal lenght range than the kit 18-55 lens. I found this one to be perfect, because of the focal lenght, the OS, the HSM and the reasonable price for the features."

Quite short 89 mm

	Image stabilization	Sigma OS			Zoom range	6.9x
	Focus motor	Sigma HSM			Aperture	f/3.8
	Fixed aperture	No			Length	89 mm
	Max focal length	125 mm			Weight	0.5 kg