lens – Panasonic Lumix G 42.5mm F / 1.2 vs Panasonic Lumix G 42.5mm f / 1.7 ASPH Power O.I.S

What will be the difference between these two objectives in terms of photo quality and what will be the difference? I'm a beginner in photography and I'm looking to invest in a good lens for 4/3 that has a maximum of features – bokeh, zoom, night / night photos, etc.

Could someone explain the difference between the two? they against and the pros?

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