Nikon D3100 Zoom Lenses that have a f/2.8 or faster aperture

"So here I am, with three awesome Sigma lenses and not one bit ashamed of them not saying Nikon on the side."

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

"The build quality is very good, focus and zoom ring are nicely damped and operate smoothly. You do not experiance any wobbling and the lens features the well known EX finish."

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

"The OS works excellent. Clear at even 200mm and nice bokeh."

More advanced image stabilization Sigma OS

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

"All around amazing lens. Sturdy build, and very crisp images. Everyday lens."

More advanced image stabilization Nikon VR II

	Aperture	f/2.8			Length	206 mm
	Image stabilization	Nikon VR II			Max focal length	200 mm
	Fixed aperture	Yes			Weight	1.5 kg
	Focus motor	Nikon AF-S			Min focal length	70 mm

"Works for low-light group photography as well as well as landscape photography - Oh, and for macros it can focus much closer than advertised."

	Aperture	f/2.8			Length	86 mm
	Image stabilization	None			Max focal length	50 mm
	Fixed aperture	Yes			Weight	0.5 kg
	Focus motor	Sigma HSM			Min focal length	18 mm

"This lens is really great. The picture quality is awsome. It can make great proxy. I've shot a picture of a spider and i can see the hair over his eyes."

More advanced image stabilization Sigma OS

	Aperture	f/2.8			Length	83 mm
	Image stabilization	Sigma OS			Max focal length	70 mm
	Fixed aperture	No			Weight	0.5 kg
	Focus motor	Sigma HSM			Min focal length	17 mm

"This lens is many things. It is pretty sharp, amazingly so above f/4. It is durable, it is reliable it is fast. It is a great deal."

	Aperture	f/2.8			Length	193 mm
	Image stabilization	None			Max focal length	200 mm
	Fixed aperture	Yes			Weight	1.3 kg
	Focus motor	None			Min focal length	80 mm

"This lens absolutely rocks. If you're shooting DX format, this is the lens you have to have."

	Aperture	f/2.8			Length	112 mm
	Image stabilization	None			Max focal length	55 mm
	Fixed aperture	Yes			Weight	0.8 kg
	Focus motor	Nikon AF-S			Min focal length	17 mm

"This is great for a beginner's lens, fast focus and clear. Not too heavy."

More advanced image stabilization Sigma OS

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