For those listening to the audio podcast, here are the photo examples from the YouTube video version of the show:
One of the earliest cameras, this device relied on camera obscura-type methods to produce Daguerreotypes – an early precursor to photographs. These were commonly used between 1839-1860
A Daguerreotype featuring Billy the Kid
From HistoricCamera.com: 1888, Kodak invents the first rolls of transparent film
The first digital camera, patented by Kodak in 1978, invented by Steven Sasson
Compact digital cameras barely sold in 2008, thanks to the advent of modern camera-phones
The dynamics of the film to DSLR evolution
While still somewhat popular, the numbers for P&S + DSLR cameras are gradually decreasing in sales every year
Worldwide sales trends of interchangeable lens (IC) cameras
Mirrorless cameras (such as the Olympus EM-10) are slowly gaining traction in the digital photography market
GoPro was once the best-selling camera on the market. As of late, their sales have taken a hit, thanks to cheap GoPro knockoffs and the rise of camera-phones
Meanwhile, popular social-media photo-sharing sites like Instagram have been increasingly popular
Drone photography has also become more popular recently!
Live streaming services such as YouTube, Twitch and Periscope are also becoming more popular – as opposed to simply taking a photo, having to develop/process it, upload it, etc.