NorBro
Major Contributor
Nah more often people used Nikon F mount lenses than Canon EF mount with the F3. Because Canon is a royal pain the ass to use when Nikon is simply better.
Also the newer F3 cameras which shipped with slog would've had the free slog update already on it which doesn't however give 444. So getting a little older one which went with the paid update instead is the way to go if you can.
I don't believe more people used Nikon, but it doesn't matter.
This link below says the following:
"New models PMW-F3K/RGB, PMW-F3L/RGB, both equipped with 10bit S-Log 4:2:2 and RGB 4:4:4 output, are available starting March 1, 2012."
https://pro.sony.com/bbsccms/ext/eblasts/streamline/0312/0312_10bit_SLogStandardweb.html
Wouldn't that mean they would have included 444 as well?