Canon Rebel T3i Telephoto lenses that have Sigma OS image stabilization

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

Fixed aperture The same aperture at all focal lengths

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

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

"I got this lens about a month and a half ago and I have been pleased with it so far. It is my second walk-around lens for my Canon XTi."

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

"This is a very convenient lens, good for every thing"

Great zoom range 13.9x

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

"I love this lens, bought it primarily for wildlife. Tack sharp images of antelope while braced against nothing but the frame of my car window (with the car engine running!) at ISO 100 with Optical Stabilization turned on. "

Great telephoto lens 400 mm

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

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

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

"It takes clear images at low shutter speeds thanks to it's image stabilization. It feels solid and is not very heavy."

	Image stabilization	Sigma OS			Weight	0.6 kg
	Zoom range	4.3x			Focus motor	None
	Fixed aperture	No			Aperture	f/4
	Max focal length	300 mm			Length	127 mm