You do not have to backup your photos just to get them on your MacBook Pro. In fact, all you have to do is enable iCloud Photo Library and/or Photo Stream on your iPhone 6 and your MacBook. That will allow your photos to be synced between devices automatically.
1. Photos or iPhoto app.
2. AirDrop function. I often use this to share photos. Very convenient.
By the way, you just cannot view the backup files unless you restore your iPhone.