After having used the new Voice Memo on my Z6 cameras for a while, I'm pleased for the feature finally being available, and confused by the quirks in the implementation. Apparently there are some shooting configurations of the Z6 that do allow voice recording, however there is
no indication that such recording is actually being made, and there is
no 'sound' icon displayed on playback either. The only indication in-camera is that there now is a question
which file to delete if you push the 'Delete' button. Very weird. I was troubled a lot with one of my Z6 bodies that simply refused to indicate 'voice memo' in operation. However, a memo *was' recorded.
Finally I turned on everything in Playback menu, plus a lot of other menu options elsewhere, and
now the audio recording is shown. Must be a glitch or a bug that the developers didn't caught. Is there anyone else noting this quirk?
A surprising aspect of the Voice Memo is that you can attach the audio to any NEF afterwards, this doesn't need to happen immediately after the picture has been taken. In fact, you can make Voice Memo for Z7 *and* D500 files if the card is inserted in the Z6
There is no opportunity to attach voice memo to movies though.