Sony Alpha DSLR-A100 Lenses for Sony Alpha (Full-frame) lens mount that have a Sigma HSM focus motor

"This Lens is very bright, with an ease of focus over it's complete range.As an Event/Fashion-Portrait Photographer i use this 50mm as my main lens."

Wide aperture f/1.4

Quite short 68 mm

	Focus motor	Sigma HSM			Image stabilization	None
	Aperture	f/1.4			Length	68 mm
	Fixed aperture	n/a			Weight	0.5 kg
	Max focal length	50 mm			Min focal length	50 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

Quite short 95 mm

	Focus motor	Sigma HSM			Image stabilization	None
	Aperture	f/2.8			Length	95 mm
	Fixed aperture	Yes			Weight	0.7 kg
	Max focal length	70 mm			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			Image stabilization	None
	Aperture	f/2.8			Length	184 mm
	Fixed aperture	Yes			Weight	1.4 kg
	Max focal length	200 mm			Min focal length	70 mm

"Its well balanced. Overall nice glass!"

Great telephoto lens 400 mm

More advanced image stabilization Sigma OS

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

More advanced image stabilization Sigma OS

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