Sony Alpha DT 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			Diameter	87 mm
	Image stabilization	None			Weight	0.5 kg

"The lens feels very solid and well made."

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			Diameter	n/a
	Image stabilization	Sigma OS			Weight	0.6 kg

"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

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

"The telephoto capabilities of this lens are great and the wide-angle aspects at 18-24 area make this a multipurpose daily go everywhere lens."

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			Diameter	n/a
	Image stabilization	Sigma OS			Weight	0.6 kg