Canon Speedlite 600EX II-RT  type_Tripods focusing and diaphragm action are

focusing and diaphragm action are good

The Kiev 4 is a Soviet copy of the Contax III

both important to its function

accurate shutter speeds throughout range

The Rollei 35S is a manual-exposure camera with a fully mechanical shutter system

Canon Speedlite 600EX II-RT &nbsptype_Tripods focusing and diaphragm action areThe Canon Speedlite 600EXII RT is a modern Speedlite for Canon DSLR and mirrorless cameras, with all the usual niceties of a full size flash tilt swivel head, full manual or automatic control, a big LCD display plus compatibility with Canon's RT radio remote system. Faster recycling than the original 600EX, plus a water resistant body for extra peace of mind. In excellent condition, with case, stand, diffuser, and two filters.