I've snapped about a thousand vacation photos on my iPhone, but since the screen is a bit too small I'd prefer to edit them on my iPad, as I find the Photos application much more fun to use with touch than with a mouse. I can't transfer photos directly from iPhone to iPad through Airdrop, as attempting to send more than about 40 photos at once crashes Airdrop. Every. Single. Time... Manually selecting 40 photos, Airdrop, repeat, takes an eternity and is not a sustainable solution either. I can transfer all the photos to my Mac first, and then to my iPad. But then I can't delete unwanted photos from my iPad, and every edit requires me to create a duplicate in the camera roll, which also ends up being a messy procedure. So in short, how can I transfer lots of photos from my iPhone's camera roll, to my iPad's camera roll and not into a locked album?