Nikon D5100 Zoom Wide angle lenses made by Sigma

"It is extremely sharp and is definatly wide enough. This is a true wide angle lens."

Fixed aperture The same aperture at all focal lengths

	Zoom range	2x			Max focal length	20 mm
	Image stabilization	None			Length	n/a
	Fixed aperture	Yes			Weight	0.5 kg
	Aperture	f/3.5			Min focal length	10 mm

". It also focuses down to 28 cm, which opens up a world of unusual close-up opportunities."

	Zoom range	2x			Max focal length	24 mm
	Image stabilization	None			Length	100 mm
	Fixed aperture	No			Weight	0.6 kg
	Aperture	f/4.5			Min focal length	12 mm

"Use for landscape photography. Good, fast auto focus."

	Zoom range	2x			Max focal length	16 mm
	Image stabilization	None			Length	n/a
	Fixed aperture	No			Weight	0.6 kg
	Aperture	f/4.5			Min focal length	8 mm

"I use this lens for automotive photography and it's amazing. At the 10mm end you CAN get a semi-fisheye look or back off a bit and get a normal wide angle look. "

	Zoom range	2x			Max focal length	20 mm
	Image stabilization	None			Length	81 mm
	Fixed aperture	No			Weight	470 g
	Aperture	f/4			Min focal length	10 mm

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

More advanced image stabilization Sigma OS

Wide aperture f/2.8

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

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

Fixed aperture The same aperture at all focal lengths

More advanced image stabilization Sigma OS

Wide aperture f/2.8

	Zoom range	2.9x			Max focal length	50 mm
	Image stabilization	Sigma OS			Length	n/a
	Fixed aperture	Yes			Weight	0.6 kg
	Aperture	f/2.8			Min focal length	17 mm

"Very happy with this lens. Used this lens for a wedding this past weeked, very pleased."

More advanced image stabilization Sigma OS

Wide aperture f/2.8

	Zoom range	4.1x			Max focal length	70 mm
	Image stabilization	Sigma OS			Length	83 mm
	Fixed aperture	No			Weight	0.5 kg
	Aperture	f/2.8			Min focal length	17 mm

"The lens is not noisy and does not creep. The reverse rotation is still sometimes confusing, but has not caused problems. The OS is excellent also. This is one very good lens with one very good price for an all-around lens."

Great zoom range 13.9x

Great telephoto lens 250 mm

More advanced image stabilization Sigma OS

	Zoom range	13.9x			Max focal length	250 mm
	Image stabilization	Sigma OS			Length	n/a
	Fixed aperture	No			Weight	0.6 kg
	Aperture	f/3.5			Min focal length	18 mm

"The HSM is quite and fast as well as accurate."

Great zoom range 11.1x

More advanced image stabilization Sigma OS

	Zoom range	11.1x			Max focal length	200 mm
	Image stabilization	Sigma OS			Length	100 mm
	Fixed aperture	No			Weight	0.6 kg
	Aperture	f/3.5			Min focal length	18 mm