When I looked at the product description I thought it was too good to be true. It was. All lenses are blue-shifted. Using a tripod set up in the yard, I took comparable shots with Canon lenses and my NIKKOR 70-300. Both Canon lenses had color shift (magenta) and were much blurrier than Canon lenses. NIKKOR. And NIKKOR is an average quality lens. The Vivitar lens had the same problem, although not as severe.
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