Opteka 650-1300mm High Definition Telephoto Zoom Lens for Nikon
Opteka 650-2600mm High Definition Telephoto Zoom Lens for Nikon
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Im looking at these lens on eBay because I want to take pictures of the moon and other things down here in the swamps. I have a Nikon D3100. What is the story behind these lenses if there is any? And what makes a cheap lens cheap? Thanks for the advice and answers.