It's a nice lens but with the deal out there on the Tamron 18-400 the Tamron is the far better option
It has better coatings, better image stabilization, MUCH better range and a 6 year warranty. Normally $649.99, there is a $50 Instant savings and we will do it for forum members for $569.99 through the end of the year PLUS we through in a Promaster HGX Circular Polarizing filter, a $159.95 value. We have them in both Canon and Nikon mounts. We also have the Canon 18-135 in stock for $399.99. Call us with any questions