BurghByrd Loc: Pittsburgh

Shimoda and F-stop also offer Photography backbacks with good features worth considering.

starlifter Loc: Towson, MD

Thanks for all your reply's. I 've a lot of research material now.

Real Nikon Lover Loc: Simi Valley, CA

Amen. I have same and it is rugged, almost too rugged. Stiff to open with the plastic protective shell. But a tank!

PurpleHaze204 Loc: North Potomac, MD

I really like the Mindshift 26L. Holds all my equipment (two cameras, 3 lenses, etc)

photoman43

Check out the ThinkTank backpacks and those made by GuraGear. Their Kiboko bags are very well made and come in three different sizes. I use Kiboko bags the mot when I need a backpack style camera bag.

https://www.bhphotovideo.com/c/product/1435530-REG/gura_gear_gg0522_1945_kiboko_2_0_22l_backpack.html

SteveLew Loc: Sugar Land, TX

You may want to look at F-Stop backpacks. These F-Stop packs are light and well made. I have had the AJNA bag (37ltr) for some time and I shoot landscape and usually hike to my destination.

rjandreoff Loc: Hawaii

I use a Lowepro AW500 for my D4 attached to a Nikon 400 2.8 AFS G VR, plus other gear. Works great, fits travel size rules for most airlines, fits nicely. $150-200.

Hip Coyote

I like that bag and use it for my M43 stuff. Wish it were a bit less flimsy for added protection. But it wont hold what the OP is carrying. That's some serious kit he's got going on.

Drbobcameraguy Loc: Eaton Ohio

I have the large Ruggard and love it.

crphoto8 Loc: Anaheim, California

Check out the ThinkTank Photo Security/Airport.

cbtsam Loc: Monkton, MD

My solution was to buy a ROTATION180° PROFESSIONAL PHOTO INSERT from thinktank, and then I went to my favorite backpack store - REI - and pretty quickly zeroed in on a Gregory Baltoro. My goal was to carry gear while backpacking, and the Gregory is just about perfect. It features a panel opening, so it's easy to get to my photo gear, and it has enough space to include other gear for camping etc. Gregory makes smaller packs if all you want to carry is the camera, lenses, etc. The important point is that the Gregory pack wears so easily; I can carry 150% in the Gregory compared with say my Kelty.

guyweech Loc: southern Idaho

Gura Gear works with their big pack but bewarned unless your a pack mule it will be very heavy that's the equipment i have in mine and I have a hard time packing it to the car!

Angel Star Photography Loc: Tacoma, WA

I use a Manfrotto Pro Lite Bumblebee 230. It packs a lot and very durable. At one time, I carried a Sigma 150-600, a Canon 24-105 f/4L, a 70-200 f2.8L, 5DIV, two flashes (600EX-RT II and 470EX AI), battery packs filled with AA batteries, and a 17-inch laptop. Needless to say it was heavy but still comfortable due to the strap construction, lumbar support, and airflow design of the backing providing cooling on the back.

https://www.bhphotovideo.com/c/product/1334233-REG/manfrotto_mb_pl_b_230_pro_light_bumblebee_230_camera.html

A couple of videos I watched in the course of my research to find the best fit for me are below:

Durability Field Test
https://youtu.be/RPK4CbKTWJs

Pack Capacity Capability (jump to 7:03 to bypass all the general information and see him unpack the bag)
https://youtu.be/klyQyxQl0tE

Sincerely,

Charles

Edit: I neglected to mention that over time I reduced the equipment I carried to just the essentials based upon the adventure I was pursuing. However, that space was then taken up by such things as a change of clothes, a pocket rocket gas stove, a mess kit, and food. The laptop was replaced with a Camelbak 3-liter bladder from my cycling backpack.