Canon EOS 1D X Prime Lenses that have a Sigma HSM focus motor

"I was completely surprised at the focus accuracy - not a single miss-focus due to the lens. Autofocus was more than fast enough for action shots. This lens is very sharp and with the speed and accuracy of the autofocus it can easily be used for close sport events. Built quality is very good. Macro is excellent, as expected. The mount and hood that comes with the lens is a huge plus."

Quite short 137 mm

Wide angle lens 150 mm

	Focus motor	Sigma HSM			Aperture	f/2.8
	Min focal length	150 mm			Weight	0.9 kg
	Length	137 mm			Image stabilization	None
	Max focal length	150 mm			Diameter	80 mm

"It's a very powerful lens and much better than de another lens on this aperture, it's amazing."

Quite short 68 mm

Wide angle lens 50 mm

Wide aperture f/1.4

	Focus motor	Sigma HSM			Aperture	f/1.4
	Min focal length	50 mm			Weight	0.5 kg
	Length	68 mm			Image stabilization	None
	Max focal length	50 mm			Diameter	85 mm

"Great for taking macro shots of insects and small objects, nice working distance when taking pictures of camera shy subjects (insects, birds, etc.)."

	Focus motor	Sigma HSM			Aperture	f/3.5
	Min focal length	180 mm			Weight	1 kg
	Length	182 mm			Image stabilization	None
	Max focal length	180 mm			Diameter	80 mm

"Flare well controlled. Autofocusing very fast and very accurate, even in relatively low light levels, thanks to the speed of the lens (HSM)."

	Focus motor	Sigma HSM			Aperture	f/2.8
	Min focal length	300 mm			Weight	2.4 kg
	Length	215 mm			Image stabilization	None
	Max focal length	300 mm			Diameter	119 mm

"I have submitted photo using this lens to my mentor who has a Canon 500mm lens and he did not see a difference."

Great telephoto lens 500 mm

	Focus motor	Sigma HSM			Aperture	f/4.5
	Min focal length	500 mm			Weight	3.1 kg
	Length	350 mm			Image stabilization	None
	Max focal length	500 mm			Diameter	123 mm