Secret Knowledge: Rediscovering the Lost Techniques of the Old Masters

Yes! A much deeper dive into the optics/lens-based visual techniques used in the 15th century up until photography was invented. I remember seeing Hockney’s Great Wall (see below) at the De Young in 2013 but it didn’t bring me to my knees like reading in depth about these images. Especially the explosion of left-handed drinkers at the end of the 16th century when lenses came onto the scene, which reverse the image (instead of earlier optics like concave mirrors which invert the image but keep it from flipping across the axis). The left-handed drinking phenomenon arrived with Caravaggio and lasted for ~40 years until good quality flat mirrors reversed the image back. Fascinating stuff.