Today, with the help of some diagrams, I explain how aperture and subject distance affect depth-of-field. See Episode #132.1 for a PDF of the diagrams.
Here is the PDF file that contains the six diagrams I use to explain this topic: https://martinbaileyphotography.com/podcasts.php?dt=ti&ep=132.1#Ep132.1
You can also find the diagrams in lower resolution in this forum post: https://martinbaileyphotography.com/forum/viewtopic.php?p=15231
Here's a link to Mikkel Stegmann's Barnack utility that I reference so much, and mentioned in the Podcast:
http://www.stegmann.dk/mikkel/barnack/
Here's the blog post from Stefan Neuweger's blog in which Stefan has kindly done a write up on the Martin Bailey Photography Podcast: http://fotos.neuweger.com/2008/04/08/podcast-showcast-mbp-podcast/
