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| Lenses Discussion of Lenses | 
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			#11  
			
			
			
			
			
		 
		
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			Because that doesn't lead to lots of repeat business as users wouldn't have to keep buying new lenses.
		 
		
		
		
		
		
		
		
		
	
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			#12  
			
			
			
			
			
		 
		
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			I think you can find out from Sigma UK by the lens serial number if it is compatible with newer Canon DSLR. For example if I recall  with the 135-400 the non compatible lens started with a 2 and the  compatible started with a 3. 
		
		
		
		
		
		
			As a general of thumb any Sigma lens older than the Canon 300D is unlikely to work on the current Canon DSLR range. 
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	Rob ----------------------------------------------------- Solar powered Box Brownie Mk2 Captain Sunshine, to be such a man as he, and walk so pure between the earth and the sea. WPF Gallery Birdforum Gallery  | 
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			#13  
			
			
			
			
			
		 
		
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			Thanks Rob, I will bear that in mind about a lenses older than 300D thats a good one to remember.
		 
		
		
		
		
		
		
			
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	Christine Iwancz Gallery upload limit is 4 photos per 24hrs Gallery Posting Guidelines here http://ciphotography.freehostia.com/index.php Equipment= Canon 7D, 40D, 400 f5.6, 75-300, 100mm Macro, 18-55, Canon 70-200 f4, Tokina 12-24mm, Kenko pro 300 1.4,1.5 and 2.0x, Jessops ext tube set, Canon 580 flash. Home made ring flash. . Close-lens.  | 
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			#14  
			
			
			
			
			
		 
		
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			Don't despair Christine. It won't work except fully open, but you can exchange it for a new Sigma at cost price; if its cheap enough it may be worth it
		 
		
		
		
		
		
		
		
		
	
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