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Amazon.com : Venus Laowa 15mm f/4 Wide Angle 1:1 Macro Lens with Shift for Pentax K Mount : Electronics
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Amazon.com : New 0.43x High Definition Wide Angle Conversion Lens for Pentax K-50 (Only for Lenses with Filter Sizes of 49, 52 or 58mm) : Electronics
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Opteka .35x HD Super AF Wide Angle Fisheye Lens with Macro and Microfiber Cloth for Pentax K-S2, K-S1, K-1, K-500, K-70, K-50, K-30, K5 IIs, K-7, K-5, K-3, K-2, K20D, K100D, K110D
Vivitar 28mm f2.8 Macro lens on my K50..need some help: Pentax SLR Talk Forum: Digital Photography Review
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Pk Extension Tube Macro Ring Compatible With For Pentax K-mount Lens K-5/k-7/k-x/k-r K-01 K-30 K110d K50 Camera - Lens Adapter - AliExpress
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Macro Extension Tube For Pentax K Mount K-7 K-5 K-5 Iis K-x K-01 K-30 K110d K50 - Lens Adapter - AliExpress
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Macro Extension Tube For Pentax K Mount K-7 K-5 K-5 Iis K-x K-01 K-30 K110d K50 - Lens Adapter - AliExpress
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Opteka RNAB000HL8EUA opteka achromatic 10x diopter macro lens for for pentax k-s2, k-s1, kp, k-1, k-500, k-70, k-50, k-30, k5 iis, k-7, k-5, k-3,
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Opteka RNAB000HL8EUA opteka achromatic 10x diopter macro lens for for pentax k-s2, k-s1, kp, k-1, k-500, k-70, k-50, k-30, k5 iis, k-7, k-5, k-3,
![Amazon.com : New 0.43x High Definition Wide Angle Conversion Lens for Pentax K-50 (Only for Lenses with Filter Sizes of 49, 52 or 58mm) : Electronics Amazon.com : New 0.43x High Definition Wide Angle Conversion Lens for Pentax K-50 (Only for Lenses with Filter Sizes of 49, 52 or 58mm) : Electronics](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/41houha3QuL._AC_UF894,1000_QL80_.jpg)
Amazon.com : New 0.43x High Definition Wide Angle Conversion Lens for Pentax K-50 (Only for Lenses with Filter Sizes of 49, 52 or 58mm) : Electronics
![Amazon.com : Opteka Achromatic 10x Diopter Macro Lens for for Pentax K-S2, K-S1, K-1, K-500, K-70, K-50, K-30, K5 IIs, K-7, K-5, K-3, K-2, K-X, K20D, K100D Digital SLR Cameras (Fits 52mm Amazon.com : Opteka Achromatic 10x Diopter Macro Lens for for Pentax K-S2, K-S1, K-1, K-500, K-70, K-50, K-30, K5 IIs, K-7, K-5, K-3, K-2, K-X, K20D, K100D Digital SLR Cameras (Fits 52mm](https://m.media-amazon.com/images/I/61bmI9a0+OL._AC_UF894,1000_QL80_.jpg)
Amazon.com : Opteka Achromatic 10x Diopter Macro Lens for for Pentax K-S2, K-S1, K-1, K-500, K-70, K-50, K-30, K5 IIs, K-7, K-5, K-3, K-2, K-X, K20D, K100D Digital SLR Cameras (Fits 52mm
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