This is where it is happening in the lab:
The enlarger, projecting the negative onto the paper.
And this is the other end of things: Scan/repro of the print.
You notice the similarities between those tools?
What I love is the mixture of different eras; The enlarger is from the mid 80s, the contraption used for the repros (also an enlarger) is hight-tech from the 60s, and the digitizing tool is a high-end digital scanback from 1999. Each of them un-affordable when new....