Sigma Wide angle lenses for less than $500 that have a f/2.8 or faster aperture

"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." bhphotovideo.com

More advanced image stabilization Sigma OS

	Aperture	f/2.8			Diameter	79 mm
	Fixed aperture	No			Length	82 mm
	Image stabilization	Sigma OS			Max focal length	70 mm
	Zoom range	4.1x			Weight	465 g

"So what is great about it? Well most everything I would say. It is a performer, it's sharp, it's light, it's sturdy, easy to use, and a good all round lens, and also it's easy on your budget from B & H." bhphotovideo.com

More advanced image stabilization Sigma OS

	Aperture	f/2.8			Diameter	79 mm
	Fixed aperture	No			Length	82 mm
	Image stabilization	Sigma OS			Max focal length	70 mm
	Zoom range	4.1x			Weight	465 g

"One of the main pros of these lens is the AF system – fast and acurate." bhphotovideo.com

More advanced image stabilization Sigma OS

Fixed aperture The same maximum aperture at all focal lengths

	Aperture	f/2.8			Diameter	84 mm
	Fixed aperture	Yes			Length	91 mm
	Image stabilization	Sigma OS			Max focal length	50 mm
	Zoom range	2.9x			Weight	0.6 kg

"Amazing very nice lens." bhphotovideo.com

More advanced image stabilization Sigma OS

Fixed aperture The same maximum aperture at all focal lengths

	Aperture	f/2.8			Diameter	84 mm
	Fixed aperture	Yes			Length	91 mm
	Image stabilization	Sigma OS			Max focal length	50 mm
	Zoom range	2.9x			Weight	0.6 kg