Nikon D40 Low light lenses for Nikon FX lens mount made by Sigma

"It is terrific! Colors are warm and pure, autofocus is fast and razor sharp, and backgrounds melt into smooth blurred colors."

Silent focus motor Silent and fast

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

"fantastic pictures....portraits of my grandkids...really clear....."

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

"i love this lens for general detail pictures for weddings, whether it be a bouquet or a church. the 1.8 makes for some really awesome and creative natural light pictures."

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

"This lens is on my D80 most of the time. It is great for outdoor nature scenes to indoor meeting and sports. From flowers to concerts to volleyball in dim gyms, I have gotten some great photos."

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