Nikon DX Lenses for less than $500 that are 10mm or wider

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

Fixed aperture The same maximum aperture at all focal lengths

	Min focal length	10 mm			Length	89 mm
	Fisheye	No			Zoom range	2x
	Fixed aperture	Yes			Weight	0.5 kg
	Diameter	86 mm			Max focal length	20 mm

"Mounted on my Nikon D90. The lens capability is as good with its Nikon equivalent at half the price after rebate. Autofocus speed is just fast enough for my application. The picture quality at low level light with flash activated on auto-mode is excellent." bhphotovideo.com

	Min focal length	10 mm			Length	99 mm
	Fisheye	No			Zoom range	2.4x
	Fixed aperture	No			Weight	406 g
	Diameter	79 mm			Max focal length	24 mm

"Since I got it about a week ago I think that I made more than 100 pictures with it and the results are outstanding" bhphotovideo.com

Fisheye Extremely wide circular images

	Min focal length	10 mm			Length	70 mm
	Fisheye	Yes			Zoom range	1.7x
	Fixed aperture	No			Weight	349 g
	Diameter	70 mm			Max focal length	17 mm