Process This Negative With Your Brain
Here’s something that’ll blow your mind (sorry that it’s an ad): stare at the colored dots on this girl’s nose for 30 seconds, then quickly look at a white wall or ceiling (or anything pure white) and start blinking rapidly. Congratulations, you just processed a negative with your brain!
P.S. Next time you’re in the photo lab, try doing this trick with your loupe and lightbox to save yourself some test prints.