Sigma SA Low light lenses that have a f/2 or faster aperture

"In my use of the lens with a Sigma mount, I have found it to be very good. The build quality is very good."

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

"I use this lens with a Sigma SD14 for fashion photography and portraits and I get stunning quality."

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

"Focus is sharp (and fast) through all f-stops, all the way to the edges. Solid lens, though a bit surprising at the size (same size and weight as my 18-135mm zoom)."

	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

"I use it often. It is quite respectable at 1.8 and gets better from there."

	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