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Title: Not quite what is advertised!!!
Review: Bought this to use with my new Canon EOS 500D/Rebel T1i and the Canon EF-S 55-250mm zoom. When I received the product my first surprise was that in the included spec document it stated: "This teleconverter is not designed for digital use. We do not guarantee its performance when used on Digital SLR cameras."One would think that this is a rather crucial piece of information to warn people about on the Amazon site, given the amount of DIGITAL SLRs and associated equipment being bought...The second surprise was that I could attach the converter to the camera OK, but neither the 250mm zoom nor the standard Canon 18-55mm zoom would fit on it.In short, this MAY be a good teleconverter, but the information provided (from both Amazon and Tamron) to properly inform the buyer on what it is compatible with is very poor and misleading...
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