Too many duplicates - need to add millisecond

[okeetd]

I use Exiftool to rename all iphone pics with HhMmSs so that I avoid storing duplicates on the computer. I am getting more and more duplicates as iphone now is taking 2-3 pics per second if you aren't careful. I think it is time to add Milliseconds. I am not all that great with scripts so I could use help to convert the below script to include Ms after the Ss below? Any help would be appreciated.

exiftool -ext jpg "-FileName<DateTimeOriginal" -d "%Y-%m-%d %Hh%Mm%Ss.%%e" "F:\Import Folder"

[StarGeek]

Because the subseconds are held in a different tag from the main date/time, things have to be moved around a bit

Try this
exiftool -ext jpg "-Filename<$DateTimeOriginal.$SubSecTimeOriginal.%e" -d "%Y-%m-%d %Hh%Mm%Ss" "F:\Import Folder"

[okeetd]

Thanks StarGeek - its minor, but can I simply remove the period between date/time original and subsectime or is that critical to the script? It seems to work, but while the script is running I can see it repeating bad format for maker notes?

[StarGeek]

Yes, you can remove the dot.  That was just there for formatting.  The only thing to watch for is if you decide to add regular letters/numbers after $SubSecTimeOriginal.  In that case, you would need to add braces

For example
exiftool -ext jpg "-Filename<$DateTimeOriginal${SubSecTimeOriginal}subsec.%e" -d "%Y-%m-%d %Hh%Mm%Ss" "F:\Import Folder"

The specific rule is that braces "must be used if subsequent text begins with an alphanumeric character, hyphen, underline, colon or number sign"