Split-detector lidar photoreceivers are described which utilize range-dependent focus to transition from illuminating two detector elements with returns from near targets, within a close-range threshold distance, to illuminating just one detector element for all other returns. In some examples, a split-detector can have or include a “bullseye” (concentric) detector configuration. Because two separate detector elements with separate amplifier chains are used, one channel can be optimized for the strong to and near-target returns, while another channel can be optimized and used for all other returns.