This study reports on cloud spatial homogeneity statistics revealed by CALIPSO's lidar (CALIOP) and its visible Wide Field-of-view Camera (WFC). CALIOP operates at wavelengths of 532 and 1064 nm and has a narrow field of view (100 m) with profile measurements separated by 333 m. The WFC is co-aligned with the lidar and operates continuously at a wavelength of 645 nm (similar to channel 1 for MODIS). Within a distance of 2.5 km of the lidar ground track, WFC pixels have a horizontal resolution of 125 m. For the portion of the WFC swath that extends beyond the near region to a distance of 30 km, pixel resolution is reduced to 1 km. The combination of these two instruments permits a detailed assessment of the cloud field along and slightly off the lidar track. For this study, marine stratus fields are examined because they are often bright and easily detected by the WFC (and CALIOP for background measurements) and have organized cell structures. A comparison with MODIS (Aqua) is made to illuminate similarities and differences revealed from the CALIOP measurement system.