I ordered a Canon telephoto zoom lens from this online store 5 days ago - its price was very competitive, hence why I'd chosen this store in the first place. The following day they called me to see if I was interested in buying a Sigma lens instead - only been on the market 2 months, they informed me it is superior to the original I had ordered, & the same price, $569. Long story short, I said yes. My lens arrived last night - I just happened to do some online searches about it & discovered that the majority of places online are... read full review »