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Are speedboosters / focal reducers worth the price?
I've been eyeing a Nikon F to MFT Viltrox or Pixco 0.71x focal reducers. They are basically Chinese made ones. Reviews seem ok but Metabones are still the best.
I've been using only dumb adapters but man with Olympus Pen M4/3 I'm tired of making all my Nikkor lenses telephoto. For $80 are these ones worth a shot?