I struggled with this for a bit. Now, I have a general idea what I will shoot before I arrive at the trailhead, so I bring what is needed for that. Usually, I shoot wide-angle landscapes, so I bring my 17-35mm. I then looked for the smallest bag that would hold my camera with that lens attached, and bought that. I removed the strap so that it doesn't take up space. It has compact pockets for holding a 2nd battery, my remote, extra memory cards, extra remote batteries, and even the allen wrench to take the ballhead clamp off. The whole thing is not too much bigger than a Nalgene. This goes right into the backpack, along with the ballhead in it's own pouch. The tripod goes on the outside of the backpack in different places depending on whether it's a day trip or an overnight. Shooting is coordinated with breaks, so it's not a big deal to pull it out of the pack each time. I usually only shoot at sunrise or sunset anyway.