Chang'E 3 (left - Sx -, M147290066LR) and Chang'e 4 (right - Dx -, M1303619844LR) are very similar in size and instrumentation. The Chang'E 3 image looks a bit fuzzier because the Landing Site is at 44° North Latitude where the LRO orbit is about twice as far from the Moon relative to the Chang'e 4 Site, at 45° South Latitude.
Each panel is roughly 463 meters (such as about 1520 feet) wide, large arrows indicate Landers and small arrows indicate Rovers.