Canon 70-300 IS USM or Tamron 70-300 SP 70-300 lens?

Started Mar 18, 2013 | Questions thread
OP BobT Forum Pro • Posts: 13,192
Re: Canon 70-300 IS USM or Tamron 70-300 SP 70-300 lens?

I have not been impressed with my 1.4X TC.  The images are noticably not a sharp as withut the TC and cropped to the same size.  Even my wife was quick to notice this.  I'm using a Kenko Pro 300 DGX TC with the blue dot.  It was the best off brand TC recommended for this lens.  I'm thinking that somehow, I might have a bad one.  I have a fellow willing to sell his Yamron 70-300 SP lens for $275.  That's almost the cost of another TC.  But if the Tammy is really poor at 300mm, I can easily for get about it.  Yet, the lens has some real impressed followers.

This si a tough call.  I have had the Canon 70-300 IS USM (non-L) lens a few years ago, and found it to be a great lens until I got the 70-200 "L".  So if the Tammy is at least as good as the Canon 70-300, it would be worth considering.  I would NOT get rid of my 70-200, however.

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