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Amazon.com : Opteka .35x HD2 Super Wide Angle Panoramic Macro Fisheye Lens for Pentax 645Z, 645D, K-S1, K-500, K-50, K-30, K5 IIs, K-7, K-5, K-3, K-2, K-X, K20D, K100D, K110D and K10D
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Amazon.com : TTArtisan 7.5mm F2.0 Fisheye Lens with 180° Angle of View Compatible with Canon EOS-R Mount Cameras Like EOS R,EOS RP, EOS R5,EOS R6 : Electronics
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