Photo Kit: Minor updates vs major upgrades

Little things add up: the recently-launched Nikon D810 has a host of tiny tweaks and additions which together add up to quite an upgrade over its predecessor

Nikon has recently introduced a round of updates to their DSLR line with the introduction of the Nikon D610 and the D810.

To be sure, the updates to both cameras are relatively minor, although for the Nikon D810, the small updates add up to quite a lot.