Sony Alpha Zoom Landscape lenses that have a Sigma HSM focus motor

"I have yet to really put this lens through its paces, but so far I am very satisfied."

Fixed aperture The same aperture at all focal lengths

	Focus motor	Sigma HSM			Aperture	f/3.5
	Zoom range	2x			Max focal length	20 mm
	Fixed aperture	Yes			Weight	0.5 kg
	Image stabilization	None			Length	88 mm

"Sigma's new Optical Stabilizer is very effective. Focus is pretty much instantaneous, and silent."

Fixed aperture The same aperture at all focal lengths

More advanced image stabilization Sigma OS

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

"This glass is sharp! At f8.0 I didn't feel the need to sharpen images in post; and the quality of the bokeh is very pleasing."

Fixed aperture The same aperture at all focal lengths

	Focus motor	Sigma HSM			Aperture	f/2.8
	Zoom range	2.9x			Max focal length	70 mm
	Fixed aperture	Yes			Weight	0.7 kg
	Image stabilization	None			Length	95 mm

"Use in everyday photography, fast focusing and great quality pictures."

More advanced image stabilization Sigma OS

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

"This lens does very well on my Alpha 700. It has a quick and accurate autofocus and the pictures are sharp and of good contrast."

Great zoom range 13.9x

Great telephoto lens 250 mm

More advanced image stabilization Sigma OS

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