For the record, I also have the Canon 24-105L lens which I use on occassion but usually end up using my Tamron 28-75 (on full frame) and Tamron 17-50 (on cropped frame) more than my Canon lens.  The Tamron lenses are MUCH lighter and easier to lug around (yes I'm a wimp, deal with it). 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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