If you're looking for a compact, durable, standard lens for outdoor shooting the 30mm EX DN is outstanding and will show you the amazing quality producible from the Sony sensors.

More durable than the easily-scratched aluminium bodied Sigmas, the lens can be used in Auto or Manual focus dependent on your camera settings.  This lens was rated as even sharper than the current version by DXOMark  https://www.dxomark.com/Lenses/Sigma/Sigma-30mm-F28-EX-DN-Sony-E-mounted-on-Sony-A6000__942

It was also recommended as a first purchase by  http://thewirecutter.com/reviews/first-sony-e-mount-lenses-to-buy/#the-portrait-lens

The lens is in immaculate condition - see photos.  The lens cap has got some wear to the matte lacquer - see photo.  Incredible value for the price.