Making a similar trip to Italy and France in October and my original plan was to take the 5D III and 2-3 lenses:
Option 1: 16-35L, 24-105L and 28-300L. (Heavy)
Option 2: 16-35L, 24-105L (light to med)
Option 3: 16-35L, 28-300L (med-heavy)
Option 4: 16-35L, Tamron 28-300 (light-med)
Any opinions out there?…especially those with experience with the new Tamron 28-300 FF lens on a 5D III (my purchase is still in the mail).
I plan to be taking typical tourist shots. I will also have my EOS M with kit & 22mm lens in my pocket
If taking all the heavy stuff plus EOS M I think you will be using the latter quite a lot. I would take the 24-105 plus the EOS M unless you are absolutely sure you will need longer reach. Enjoy the trip.