From left to right. My Canon EOS-M camera, an adapter to go to M42, then M42 bellows and finally an antique lens attached by another adapter, often home made.

Modern lenses have focussing parts in lens but antique cameras have mechanism in the camera where the whole lens is moved backwards and forwards. These lenses produced an image on large glass plates but now only a tiny part of that covers the sensor.

Fallowfield Wide Angle lens made in London (1870ish or to be honest probably later). A little tweak in post for contrast. Probably the oldest lens I have (the Amber is 1890 but the date on that is certain)

Thornton Pickard Amber lens (1890). A generation newer and the wheel aperture is replaced by the more modern type. Still a lot fewer pieces of glass than a modern lens. #photography