I assembled this lens for around $100
-Vivitar 400mm f/5.6 Telephoto Lens-$52 (eBay)
-Canon FD 2X Extender-$27 (eBay)
-Canon FD to EF converter-$30 (Amazon)
For a cheap little lens it’s not too bad picture quality. Of course it’s nowhere near the quality of a Canon or Nikon of equivalent focal length, but with the price and the reduced weight and size you can’t argue. It’s a pretty fun and easy lens to use anyway.
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