The original discussion was about lenses, not cameras - I don't think that distinction between digital/film cameras was ever in doubt.
Actually the OP did argue the distinction between between film and digital cameras. Hopefully that’s all clear now.
I am still looking for the distinct codes that your wife says are separating lenses for film and digital cameras: I can't find it and I have been looking.
90.02 is objective lenses
9002.11 is for cameras etc... so for all cameras, lenses are in 9002.11
9002.11.10 is for a bunch of things including photographic (defined as film) cameras, but NOT digital cameras, which we know are categorized separately. So lenses for film cameras come under here.... specifically 9002.11.10.10... 0%
Digital cameras aren’t listed there, so they would come under “Other” which is 9002.11.90.00... 2%.
Why wouldn’t digital cameras come under 9002.11.10.90? Because they’re not listed under 9002.11.10.
Understanding the tariff is something for trained people. My wife has been explaining it to me, and I understand what she’s telling me as she shows it to me, but it can not be easily read by someone who does not understand the entire format.
It’s a constantly evolving document - who knows, maybe next year, they’ll all be duty free.