I'm still getting used to my R6 II, which has all three shutter modes, mechanical, electronic, and electronic first curtain (EFCS). An excellent explanation of the pros and cons of each is here: https://photographylife.com/mechanic...c-shutter-efcs. It all seems clear to me other than this passing reference at the end:
And indeed, I've read that some cameras gray out the long-exposure option if the electronic shutter is chosen. My R6 II does not gray out that option.Lastly, if you need to use specific options that the electronic shutter prevents (like long exposure noise reduction), you obviously should use a different shutter mechanism.
I'm assuming that the issue is that with an electronic shutter, there is nothing to block the light to create the black frame. However, if the camera has a mechanical shutter (the Z8 and Z9 apparently don't), there is no reason that the mechanical shutter couldn't be closed for the black frame even if it isn't used for the capture. I assume that's what my camera does.
Somewhat off topic: if this is right, this would suggest that the Z8 and Z9 lack long-exposure noise reduction. Is that right? the other drawback of not having a mechanical shutter or at least electronic first curtain is the risk of banding under artificial light. I haven't used fully electronic shutter with indoor shots, which usually mix flash and ambient light, but I have done a bunch with EFCS and haven't noticed banding.