I recently had the pleasure of renting the Canon 70-200 2.8 L IS MK II from BorrowLenses.com. Like all their rentals – they try to provide everything that would have come with the item had you bought it. In this case that means a lens case, hood, front and rear caps, tripod mount ring, and they also throw on a UV filter for those that prefer them. The very first thing you notice upon taking the lens out is the weight – a hefty 3+ pounds! My current heaviest lens is at a paltry 1+ pounds, so it was quite a dramatic difference for me. This was especially notable as…