Changes in Lens Technology, of Course

Electronic music genius Tom Hamilton explains why I look fatter in the PR photo for the Interpretations series than I really am:

I’ve noticed that every old picture I look at has just a little bit narrower
version of myself. The explanation is probably that changes in lens
technology have created subtle distortions that tend to “bulk up” the
image. (This can probably explain why Saturn’s rings look so hyperbolic.) So go ahead and have that second bowl of Doritos.

So comforting to have it explained by someone who understands the scientific principles involved.