That car was not built with one.
Yes, absolutely...It is far more stable and produces better images...
CW is an electronics term for continuous wave Unfortunately, the Mitel SX20 is a PBX telephone system, not a radio transmitter. CW on the console means "Calls Waiting." When the attendant is using the console and additional calls are waiting to be answered, the CW lamp informs you of how many calls are unattended to and are currently ringing.
Sorry to make you sad but this machine's lens cannot be changed, you can just add telezoom coverter on it.