The Zeiss Contax IIa was the follow-up to the Contax II in West Germany after WWII. The original Contax was made to compete with the Leica 35mm cameras.
1:40 finder shoe
2:56 shutter speed dial
3:10 winding / shutter cocking knob
3:40 frame counter
3:50 black dial vs color dial
5:01 1250th sec speed
5:39 T vs Bulb
8:51 combined view/range finder
11:00 sync chord connector
11:34 camera strap
14:02 taking off the back
14:25 take up spool
15:03 focal plane shutter
15:55 different film loading
18:08 tripod socket
19:23 focusing/infinity lock
20:50 normal lens
21:05 aperture
21:20 normal lens mount
21:38 helical
22:50 focus moving on aperture change
23:39 what is a normal lens?
24:45 telephoto lens
27:40 self timer
