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onlinemanual.nikonimglib.com
Formatting a card with a load setting saved on it erases the setting for sure--Hudson Henry has a video showing that he never formats a card with his saved settings but deletes all the photos instead.
This is ok to do once in a while, but is not a best practice for long term usage of your memory card. Hudson even comments on this in some of his later videos, after he initially brought up the idea of deleting photos on the card in order to preserve your config files.
Yep, several years ago, it was said don’t delete individual photos from memory cards—it was pretty much SD or CF cards back then—using the in-camera delete or the card could get corrupted. Since then, with the newer cards like CF express, that doesn’t seem to be the rule anymore, with Henry’s process taking it even further where he’d delete an entire card’s photos as to not erase the load setting file saved on the card. I didn’t know he’d backed off on that…I pretty much do what I first learned and don’t use the camera to delete photos so I never adopted Henry’s practice anyway.
It's a good idea to format new cards in the camera before use but it isn't strictly necessary.
Those settings are in the camera's non-volatile memory and changing cards doesn't change those settings.
Only if you took the extra step in the menus to Save those settings onto your memory card. Normally there are no settings saved to the card but you can optionally save a copy to a memory card for future loading if you do something like a full factory reset on the camera and want to reload all your custom settings without having to re-enter them. I use an older memory card to save camera settings, label it with a sharpie and then set it aside just for restoring settings in the future if necessary. But I don't save settings onto the memory cards I actually use while out shooting because I always reformat my cards after uploading the images to my computer and that reformatting would wipe out any settings saved on actual cards I use.
Yes, when you customize your settings it's saved in the camera's internal memory and a copy only gets saved onto a memory card if you explicitly do so via the menus using the Save function. But even if you do that it's just a copy of the settings stored in the camera itself.
