Sony Alpha DSLR-A390 Zoom Lenses that have a Sigma HSM focus motor

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

Fixed aperture The same aperture at all focal lengths

	Focus motor	Sigma HSM			Aperture	f/2.8
	Max focal length	50 mm			Length	n/a
	Fixed aperture	Yes			Weight	0.6 kg
	Image stabilization	Sigma OS			Min focal length	17 mm

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

	Focus motor	Sigma HSM			Aperture	f/2.8
	Max focal length	50 mm			Length	n/a
	Fixed aperture	No			Weight	395 g
	Image stabilization	Sigma OS			Min focal length	18 mm

"This is a fantastic lens. It is super fast, very sharp, and so true to color."

Fixed aperture The same aperture at all focal lengths

	Focus motor	Sigma HSM			Aperture	f/2.8
	Max focal length	70 mm			Length	95 mm
	Fixed aperture	Yes			Weight	0.7 kg
	Image stabilization	None			Min focal length	24 mm

"Having the f2.8 throughout the range allows the pictures to be light without noise. It focuses super quick."

Fixed aperture The same aperture at all focal lengths

	Focus motor	Sigma HSM			Aperture	f/2.8
	Max focal length	200 mm			Length	184 mm
	Fixed aperture	Yes			Weight	1.4 kg
	Image stabilization	None			Min focal length	70 mm

"Wow, Great lens from 120 to 400mm nice photos and pretty fast for under $1000.00 lens."

Great telephoto lens 400 mm

	Focus motor	Sigma HSM			Aperture	f/4.5
	Max focal length	400 mm			Length	204 mm
	Fixed aperture	No			Weight	1.7 kg
	Image stabilization	Sigma OS			Min focal length	120 mm

"This is a great value lens, and in my opinion can't be beat for the price. I photograph everything from wildlife to portraits to flowers and macro shots to landscapes. While this is not a do all lens, it fits right in and works for anything that fits within its 50-200mm zoom range. The build quality is also exceptional at the price, with no slop in the workings of the lens. It also comes with a lens hood that conveniently stores backwards on the lens. The focus is internal, so it good for polarized filters, tulip hoods, etc. All in all a great lens for the price."

	Focus motor	Sigma HSM			Aperture	f/4
	Max focal length	200 mm			Length	102 mm
	Fixed aperture	No			Weight	n/a
	Image stabilization	Sigma OS			Min focal length	50 mm

"I took it to Yellowstone on my first outing with it. I got some great shots of many aminals off in the distance."

Great telephoto lens 500 mm

	Focus motor	Sigma HSM			Aperture	f/5
	Max focal length	500 mm			Length	252 mm
	Fixed aperture	No			Weight	1.9 kg
	Image stabilization	Sigma OS			Min focal length	150 mm