My son has nicked my Canon 7D DSLR camera now and is trying to get his head around depth of field. I'm glad I'm not paying for film to be developed.
For anyone who is interested in taking better photographs, the Aussie bloke in the first post of this thread (Chris Bray) also has much shorter videos on YouTube which can help people who want to be better photographers The long video in the first post is split up into ten shorter videos at: https://www.youtube.com/@ChrisbrayNet1
Pity, I left my paint's at home that day... and only had time to snap this one on my old Sony Erricson...