Canon Rebel T3i Lenses made by Sigma

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

Fixed aperture The same aperture at all focal lengths

More advanced image stabilization Sigma OS

	Fisheye	No			Image stabilization	Sigma OS
	Zoom range	2.9x			Max focal length	50 mm
	Fixed aperture	Yes			Weight	0.6 kg
	Aperture	f/2.8			Min focal length	17 mm

"For beginers and entusiasts it's a great choice."

More advanced image stabilization Sigma OS

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

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

Great zoom range 13.9x

More advanced image stabilization Sigma OS

Great telephoto lens 250 mm

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

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

More advanced image stabilization Sigma OS

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

"Great for certain things such as landscape, real-estate, and architecture."

	Fisheye	No			Image stabilization	None
	Zoom range	2x			Max focal length	16 mm
	Fixed aperture	No			Weight	0.6 kg
	Aperture	f/4.5			Min focal length	8 mm

"I love that a lens in this price-range will go to f/1.4 - it provides great bokeh and is very good for indoors in low light. Pictures in churches and museums have turned out especially well."

Wide aperture f/1.4

	Fisheye	No			Image stabilization	None
	Zoom range	1x			Max focal length	30 mm
	Fixed aperture	n/a			Weight	430 g
	Aperture	f/1.4			Min focal length	30 mm

"Great lens for outdoor and even interior/architecture. This is a really fun lens especially on portrait."

Fisheye Extremely wide circular images

	Fisheye	Yes			Image stabilization	None
	Zoom range	1x			Max focal length	4.5 mm
	Fixed aperture	n/a			Weight	470 g
	Aperture	f/2.8			Min focal length	4.5 mm

"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"

More advanced image stabilization Sigma OS

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

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

Fixed aperture The same aperture at all focal lengths

More advanced image stabilization Sigma OS

	Fisheye	No			Image stabilization	Sigma OS
	Zoom range	2.9x			Max focal length	200 mm
	Fixed aperture	Yes			Weight	1.4 kg
	Aperture	f/2.8			Min focal length	70 mm

"Excellent in low light conditions. Super fast, quiet and precise focus."

Wide aperture f/1.4

	Fisheye	No			Image stabilization	None
	Zoom range	1x			Max focal length	50 mm
	Fixed aperture	n/a			Weight	0.5 kg
	Aperture	f/1.4			Min focal length	50 mm