Nikon D40 Lenses made by Sigma that have a f/1.8 or faster aperture

"It feels great, the pictures look great, and it focuses pretty fast. Also, it doesn't make a lot of noise on the videos made with the D90 compared to all my other lenses"

Silent focus motor Silent and fast

	Aperture	f/1.4			Length	59 mm
	Focus motor	Sigma HSM			Weight	430 g
	Min focal length	30 mm			Diameter	76 mm
	Max focal length	30 mm			Auto focus	Yes

"This lens is one of the best 50mm lenses we have used. It is incredibly sharp (even wide open) and the colors are really gorgeous and vibrant."

Silent focus motor Silent and fast

	Aperture	f/1.4			Length	68 mm
	Focus motor	Sigma HSM			Weight	0.5 kg
	Min focal length	50 mm			Diameter	85 mm
	Max focal length	50 mm			Auto focus	Yes

"This is a great lens for low-light situations; it lets in a ton of light & stays decently sharp at f1.8. Past f2.8, however, IQ is VERY impressive. "

	Aperture	f/1.8			Length	79 mm
	Focus motor	None			Weight	481 g
	Min focal length	28 mm			Diameter	84 mm
	Max focal length	28 mm			Auto focus	Yes

"As far as the noise, I can tell you I don't hear a thing but the band and the party when I shoot. This is a fast sharp lens. A great addition to any pro wedding photographer."

	Aperture	f/1.8			Length	86 mm
	Focus motor	None			Weight	0.5 kg
	Min focal length	20 mm			Diameter	89 mm
	Max focal length	20 mm			Auto focus	Yes

"My copy is tack sharp where it should be, fast and accurate focusing. The build quality feels sturdy and reliable. I will be taking a chance on more sigma glass in the future."

	Aperture	f/1.8			Length	79 mm
	Focus motor	None			Weight	485 g
	Min focal length	24 mm			Diameter	84 mm
	Max focal length	24 mm			Auto focus	Yes