Sony Alpha DSLR-A100 Zoom Telephoto lenses

"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."

More advanced image stabilization Sigma OS

Silent focus motor Silent and fast

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

"this lens is tack sharp with wonderful bokeh"

Fixed aperture The same aperture at all focal lengths

Silent focus motor Silent and fast

Wide aperture f/2.8

	Fixed aperture	Yes			Max focal length	200 mm
	Image stabilization	None			Length	197 mm
	Focus motor	Sony SSM			Weight	1.4 kg
	Aperture	f/2.8			Zoom range	2.9x

"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

Silent focus motor Silent and fast

Wide aperture f/2.8

	Fixed aperture	Yes			Max focal length	200 mm
	Image stabilization	None			Length	184 mm
	Focus motor	Sigma HSM			Weight	1.4 kg
	Aperture	f/2.8			Zoom range	2.9x

"It is sharp wide open, focuses fast,handles easily, and weighs less than my 2.8 300"

Silent focus motor Silent and fast

Great telephoto lens 400 mm

	Fixed aperture	No			Max focal length	400 mm
	Image stabilization	None			Length	196 mm
	Focus motor	Sony SSM			Weight	1.6 kg
	Aperture	f/4			Zoom range	5.7x

"Its well balanced. Overall nice glass!"

More advanced image stabilization Sigma OS

Silent focus motor Silent and fast

Great telephoto lens 400 mm

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

"I like nature and photograph birds,bugs,mushrooms and flowers. I had been useing the Sony 75-300 kit lens which was noisy and slow to focus. The 70-300G lens is silent and acquires focus almost instantly.I no longer have purple fringing on my bird shots. I love this lens."

Silent focus motor Silent and fast

	Fixed aperture	No			Max focal length	300 mm
	Image stabilization	None			Length	137 mm
	Focus motor	Sony SSM			Weight	0.8 kg
	Aperture	f/4.5			Zoom range	4.3x

"It works great, lots of close ups and lets in plenty of light in ice rink."

Fixed aperture The same aperture at all focal lengths

Wide aperture f/2.8

	Fixed aperture	Yes			Max focal length	200 mm
	Image stabilization	None			Length	194 mm
	Focus motor	None			Weight	1.1 kg
	Aperture	f/2.8			Zoom range	2.9x

"It reveals very nice skin texture and fine detail at 300mm at a distance away from the subject and for me is the best quality lens i've tried over this range for the A900 + constant f4 is nice."

Fixed aperture The same aperture at all focal lengths

	Fixed aperture	Yes			Max focal length	300 mm
	Image stabilization	None			Length	224 mm
	Focus motor	None			Weight	1.5 kg
	Aperture	f/4			Zoom range	3x