Sony SLT-A77 Wide angle lenses made by Sigma that have a f/2.8 or faster aperture

"The lens feels very solid and well made."

Fixed aperture The same aperture at all focal lengths

More advanced image stabilization Sigma OS

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

"This is a very functional lens in low light situations when using a monopod. I used it for a show inside of an event center with a lot of success (if you are looking for motion blur in your action shots). Overall I really like the lens and would recommend it."

More advanced image stabilization Sigma OS

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

"I just returned from a trip to San Francisco and was very satisfied with the performance of the lens. It worked well for street shots in Chinatown as well as wide angles at the Golden Gate bridge."

Fixed aperture The same aperture at all focal lengths

	Aperture	f/2.8			Zoom range	2.8x
	Fixed aperture	Yes			Max focal length	50 mm
	Focus motor	None			Weight	450 g
	Image stabilization	None			Length	86 mm

"Lens is incredible: well built, great OS, great clarity, silent and fast auto focus."

	Aperture	f/2.8			Zoom range	4.1x
	Fixed aperture	No			Max focal length	70 mm
	Focus motor	None			Weight	455 g
	Image stabilization	None			Length	83 mm