I don't know which generation it is. It has a camera and I bought it 2 summers ago.
It locks and shuts off, but if you quickly press the home button twice, music options come up, and the lock screen has a camera button.
good tip , not as handy as the classic but a much better than unlocking every time .
I just showed my 10 year old granddaughter .
Of course she said "ya i knew that"