VenusOptics Laowa 100mm f/2.8 2X Ultra Macro APO Lens for PentaxKK-Mount Lens/Full-Frame Format, Aperture Range: f/2.8 to f/22, Two Low Dispersion Elements, Maximum Magnification: 2:1, Minimum Focusing Distance: 9.7", Manual Focus Design LENSES-SLR... more
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