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Pentax hd d fa macro 100mm f 2 8 ed aw vs pentax 50mm f 2 8?

I don't have a Pentax 50mm f/2.8 on the site, so I can't compare it directly with the macro. The closest lens I cover is the TTArtisan 50mm f/2, but it doesn't mount on Pentax K, so it's a different system altogether.

The Pentax HD D FA Macro 100mm f/2.8 ED AW is a weather-sealed 1:1 macro. It frames as 100mm on full frame and like 150mm on APS-C. Choose it for close-up work like flowers, insects and small objects. If you want the earlier weather-sealed macro with a different optical design, look at the Pentax smc D FA Macro 100mm f/2.8 WR. For reach and tight headshots outdoors, the Pentax HD D FA* 70-200mm f/2.8 is the zoom to consider.

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