Nikon D3100 Telephoto lenses for Nikon FX lens mount made by Sigma

"This is an impressive lens with no obvious cons. The build quality is excellent and image quality and resolution at a variety of distances and macro are at least as good (to my eyes) as Nikon glass. The bokeh is also good especially for a zoom lens."

Very light 0.9 kg

Quite short 137 mm

Low price $729.00

	Weight	0.9 kg			Aperture	f/2.8
	Length	137 mm			Fixed aperture	n/a
	Min focal length	150 mm			Image stabilization	None
	Max focal length	150 mm			Zoom range	1x

"This 120-300 Sigma provides great range, and when I need just a bit more, I can achieve it with the 1.4x converter. The auto- focus is darn fast and the lens is quite sharp even wide open."

Fixed aperture The same aperture at all focal lengths

Wide aperture f/2.8

	Weight	2.6 kg			Aperture	f/2.8
	Length	269 mm			Fixed aperture	Yes
	Min focal length	120 mm			Image stabilization	None
	Max focal length	300 mm			Zoom range	2.5x

"I use this lens a lot for bikini models and have produced excellent results."

Wide aperture f/2.8

	Weight	2.4 kg			Aperture	f/2.8
	Length	215 mm			Fixed aperture	n/a
	Min focal length	300 mm			Image stabilization	None
	Max focal length	300 mm			Zoom range	1x

"I am using this for outdoor on-location portraits on the D700. This lens is absolutley excellent in terms of optical quality, sharp at f/2.8, very pleasing bokeh, and it focuses fast as lightning."

Low price $799.00

Very light 1.4 kg

Wide angle lens 70 mm

	Weight	1.4 kg			Aperture	f/2.8
	Length	184 mm			Fixed aperture	Yes
	Min focal length	70 mm			Image stabilization	None
	Max focal length	200 mm			Zoom range	2.9x

"This is an excellent lens. Extremely sharp focus, fairly lightweight for an F4.5."

Great telephoto lens 500 mm

	Weight	3.1 kg			Aperture	f/4.5
	Length	350 mm			Fixed aperture	n/a
	Min focal length	500 mm			Image stabilization	None
	Max focal length	500 mm			Zoom range	1x

"The autofocus is super fast, accurate, and quiet."

Great telephoto lens 800 mm

Fixed aperture The same aperture at all focal lengths

	Weight	5.9 kg			Aperture	f/5.6
	Length	542 mm			Fixed aperture	Yes
	Min focal length	300 mm			Image stabilization	None
	Max focal length	800 mm			Zoom range	2.7x

"It's auto focus system is quick, quiet and accurate and the optics are superior to my expectations in a lens that is so low priced compared to the Nikon lenses. I'm very pleased with this purchase!"

Low price $949.00

More advanced image stabilization Sigma OS

Very light 1.7 kg

	Weight	1.7 kg			Aperture	f/4.5
	Length	204 mm			Fixed aperture	No
	Min focal length	120 mm			Image stabilization	Sigma OS
	Max focal length	400 mm			Zoom range	3.3x

"It works well is quick to focus. On tripod it is very sharp."

Great zoom range 10x

Wide angle lens 50 mm

More advanced image stabilization Sigma OS

	Weight	2 kg			Aperture	f/4.5
	Length	219 mm			Fixed aperture	No
	Min focal length	50 mm			Image stabilization	Sigma OS
	Max focal length	500 mm			Zoom range	10x

"This lens was incredible! From the rooftop and the bedroom of my penthouse suit, I was able to capture the true beauty of the people on the beach"

Great telephoto lens 500 mm

Fixed aperture The same aperture at all focal lengths

Wide aperture f/2.8

	Weight	15.7 kg			Aperture	f/2.8
	Length	726 mm			Fixed aperture	Yes
	Min focal length	200 mm			Image stabilization	None
	Max focal length	500 mm			Zoom range	2.5x