How doI ncrease focal range on Tamron 70-300?

Started May 5, 2012 | Discussions thread
happysnapper62
Contributing MemberPosts: 950
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Re: How doI ncrease focal range on Tamron 70-300?
In reply to DaSigmaGuy, May 6, 2012

Thanks, but could I ask the question again, what do I need to do to convert the long end of my 70-300 into something like 450-500? lee uk

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