What accessories do I need for the sony rx1?

Here is what the site says about that.

From Sony RX1: Sony RX1: A fixed-lens compact by Sony with a 24.3-megapixel full frame sensor, announced in 2012. A full-frame compact with a fixed 35mm f/2 lens. Specs - Maker: Sony - Lens: built in, 35mm f/2 - Sensor: Full frame, 36 x 24mm, crop factor 1.0 - Resolution: 24.3 megapixels - Stabilisation: none - Announced: 2012 - Type: fixed-lens compact Focal lengths on it Its 35mm lens frames like 35mm on full frame, ...

From Sony RX1R: Sony RX1R: A fixed-lens compact by Sony with a 24.3-megapixel full frame sensor, announced in 2013. The RX1 without an anti-aliasing filter.

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