Two issues I can think of off-hand.

First, the image is shot through the transparent lens cap currently protecting the camera. The cap wont be removed until after the mast is deployed. The mast is still in the position it was stowed in for the journey, this is why the image is at an angle.

Second, the high gain antenna hasn't been deployed yet, so they're working on limited bandwidth. The image was probably heavily compressed to transmit it over the link currently in use.