The video on top shows the very first video taken with a modified Voigtländer 25mm f/0.95 lens. What has been modified? The mount has been permanently changed from Micro Four Thirds to E-mount. You can get that modfied version on eBay (Click here). You don’t have a lot of cheap options if you need ultrafast lenses. You can spend almost $1000 for the Canon 50mm f/0.95 and $10.000 for the Leica Noctilux 50mm f/0.95. You need an adapter for both lenses!