The camera most recommended for real estate video by HDhat.com is the Sony WX50(formerly the Sony WX9) with a wide angle lens.   The kit shoots an amazing 17.5mm ultrawide, ultra smooth video and is packed with loads of features.  Some of those features that are most relevant to real estate video are discussed in the video below.   

The Complete Sony WX50(formerly the WX9) camera kit can be viewed and/or ordered HERE

Sample Real Estate Video Tour filmed with Sony WX9(now called the Sony WX50) below: