Macro Prime lenses for Pentax K20D
The Pentax K20D incorporates the Pentax KAF2 mount and has a APS-C sized sensor. Currently, we have information on 3 Macro Prime lenses that will work with the K20D.
The K20D offers a crop factor of 1.5 so you have to multiply the lens focal length with 1.5 to see it's full frame equivalence. You can just click the 
symbol to see how the lens fits the K20D.
We have also developed an Advanced Lens Search so you can easily find your ideal lens.
ModelVisualizeFocal LengthApertureStabilizedWeight
Venus Laowa 100mm F2.8 2X Ultra Macro APO100mmf/2.8638g
Venus Laowa 25mm F2.8 2.5-5X Ultra Macro25mmf/2.8400g
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Samsung D-Xenon 100mm F2.8 macro100mmf/2.8 345g