The
Nikon D610, initially released fall 2013, is the successor to the
previously released D600. Interestingly enough, this camera replaced its
successor only 13 months later
Initially released in the fall of 2019, the Sony a6100 is the long-awaited replacement to the original a6000. Since it’s release, the original a6000 has remained the cornerstone of Sony’s Alpha Six lineup. https://photographypx.com/sony-a6100-review/