How to auto-copy photos taken with camera?
This can all be done in OneNote without having to copy paste. However, this requires a Microsoft account to sync.  Be sure to install OneNote also on your iPhone.

Transfer photos to a note


Open OneNote on the iPad, open a note or create a new one.
Open OneNote on the iPhone, navigate to the same note.
Keep both open during the lecture.
On the phone when it is time to snap a photo, tap on the note were you wish to insert the photo.
There is a camera icon above the virtual keyboard - Take photo.
Tap the check mark to accept [Top right of screen].
The photo will automatically appear in the note on the iPad.


Viola!

Camera Icon location in OneNote for iPhone:





Take Photo Dialog:



Inserted photo on iPhone:



Updated automatically to iPad [note the time stamp on the note is the same as on iPhone]: