You asked
Is the panasonic lumix s 100mm f 2 8 macro good on aps c?
Here is what the site says about that.
From Panasonic Lumix S 100mm f/2.8 Macro: Panasonic Lumix S 100mm f/2.8 Macro: A macro lens by Panasonic for Full frame cameras, 100mm f/2.8. Specs - Maker: Panasonic - Focal length: 100mm (macro) - Maximum aperture: f/2.8 - Made for: Full frame sensors - Mounts: L-Mount - Stabilised: no - Autofocus: yes What it frames like - On full frame (L-Mount): as marked, 100mm. - On APS-C (L-Mount): like 150mm on full frame; f/2.8 gives about the depth of field of f/4.2 there. ...
From Sensor sizes: What it costs you: - Size, weight and price, especially of the lenses. A full-frame telephoto is much larger than its APS-C or Micro Four Thirds equivalent. - Less depth of field when you want more of it, for macro or landscape.
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