It does not seem that obvious on how to copy photos and video off the iPhone onto a Mac. With Android phones you can look at the file system and locate the required files. One method I used in the past was to use iPhoto, import the photos and then drag the photos into the relevant directory in Finder.
But the quickest method I found was to open up the 'Image Capture' (I use spotlight for this) and from there you can view and browse the images and videos on the phone and drag and drop them into the relevant directories in Finder.