It has an equivalent angle of view of a 12 24mm lens when used on digital camera with an aps c size image sensor.
													
																	Sigma 8 16 canon full frame. 
								
	
		
	
																	This is the first ultra wide zoom lens with a minimum focal length of 8mm designed specifically for aps c size image sensors. 
																	It s styled like a traditional leica m rangefinder and brings a host of updates to the hugely popular original leica q typ 116 that was launched in 2015. 
																	The lens shows hard vignetting when affixed to a full frame body at all focal lengths. 
																	Canon eos 5d mark ii canon eos 5d canon ef 85mm f 1 2l ii usm tamron sp 24 70mm f2 8 di vc usd sigma 12 24mm f4 5 5 6 ex dg aspherical hsm 3 more reply reply with quote reply to thread complain. 
															
													
								
	
		
	
																	Being a sigma dc digital camera lens the sigma 8 16 has a smaller than full frame image circle designed to work only on aps c 1 6x 1 5x fovcf dslrs. 
																	The 8 16mm bears sigma s dc specification meaning it is designed to fit the aps c digital sensor. 
																	View full review the sigma 8 16mm f4 5 5 6 dc hsm is the only one of its kind.