There's something to be said about OEM lenses with full compatibility, native mount support, and a high level of quality control. That all comes with a cost attached. Then there are third-party manufacturers: companies that often offer the same level of compatibility, quality control, and multiple lens mount options, but many don't carry a price tag as high as the original manufacturers'. So today, we have John and Bill, joined by Mario and Brian, to discuss all things third party, from classic Tokina, Tamron, and Sigma. Modern options from TTArtisans and 7Artisan lenses, and of course, Light Lens Labs, who are painstakingly creating modern, affordable versions of classic Leitz Optics.

So, back in December 2025, Alex handed out some expired film to James and Bill, and today we're back revisiting the topic of expired film. And while Bill & James haven't had the chance to shoot their rolls, Alex did shoot his odd duck of a roll. Everything from colour shifts to fog and bad chemical packs, it's all about shooting and using expired film. From developing without any data to best practices, techniques and chemistry needed.

Today, Alex is joined by David Smith, a Biology professor and researcher at Western University in London, Ontario. While we mostly talk about cameras on the show, David has something unique: microscopes. As many history nerds know, many camera companies we know and love today began producing optics, including microscopes. Dr Smith came by this affinity for collecting honestly, as his mom is an antique dealer. David talks about his microscopes, how he started the collection, and how it led to film photography and a fantastic collection of Leica rangefinders, lenses, and medium-format cameras.

You can find Dr Smith online. Instagram https://www.instagram.com/arrogantgenome/?hl=en