Sony Alpha DSLR-A100 Wildlife lenses that have a Sigma HSM focus motor

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

	Focus motor	Sigma HSM			Aperture	f/4.5
	Zoom range	3.3x			Length	204 mm
	Max focal length	400 mm			Weight	1.7 kg
	Fixed aperture	No			Image stabilization	Sigma OS

"Captured tons of amazing shots of birds and wildlife. Images crisp, clear; even at 200mm.- Great quality, easy to focus, quick focus, good aperture.- No cons."

Quite short 102 mm

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

"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
	Zoom range	3.3x			Length	252 mm
	Max focal length	500 mm			Weight	1.9 kg
	Fixed aperture	No			Image stabilization	Sigma OS

"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

Very light 0.6 kg

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