Pentax hd da 35mm f 2 8 macro limited vs pentax smc d fa macro 50mm f 2 8?

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From Pentax smc D FA Macro 50mm f/2.8: Pentax smc D FA Macro 50mm f/2.8: A macro lens by Pentax for Full frame cameras, 50mm f/2.8. Specs - Maker: Pentax - Focal length: 50mm (macro) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: Pentax K - Stabilised: no - Autofocus: yes What it frames like - On full frame (Pentax K): as marked, 50mm. - On APS-C (Pentax K): like 75mm on full frame; f/2.8 gives about the depth of field ...

From Pentax HD DA 35mm f/2.8 Macro Limited: Pentax HD DA 35mm f/2.8 Macro Limited: A macro lens by Pentax for APS-C cameras, 35mm f/2.8. A 1:1 macro lens in a small Limited barrel. Specs - Maker: Pentax - Focal length: 35mm (macro) - Maximum aperture: f/2.8 - Made for: APS-C sensors - Mounts: Pentax K - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Pentax K): like 52mm on full frame; f/2.8 gives about the depth of field of f/4.2 ...

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